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A Closer Look at a Vulnerability in Gmail

Posted by smit sanghvi Saturday, October 31, 2009 0 comments

Gmail is one of the major webmail service provider across the globe. But as we all know Gmail still carries that 4 letter word BETA. Sometimes we may wonder, why Gmail is still in the testing stage even after years of it’s emergence. Here is one small reason for that. 
Gmail follows a strict rule that doesn’t allow it’s users to have their first or the last name contain the term Gmail or Google. That is, while signing up for a new Gmail account the users cannot choose a first or last name that contains the term Gmail or Google. You can see this from the below snapshot.



This rule is implemented by Gmail for obvious reasons, because if the users are allowed to keep their first or the last name that contains the term Gmail or Google, then it is possible to easily impersonate the identity of Gmail (or Gmail Team) and engage themselves in phising or social engineering attacks on the innocent users. This can be done by simply choosing the first and last name with the following combinations.
First Name        Last Name
Gmail                       Team
Google                     Team
Gmail                       Password Assistance
From the above snapshot we can see that, Gmail has made a good move in stopping the users from abusing it’s services. However this move isn’t just enough to prevent the malicious users from impersonating the Gmail’s identity. Because Gmail has a small vulnerability that can be exploited so that the users can still have their name contain the terms Gmail or Google. You may wonder how to do this. But it’s very simple.
1. Login to your Gmail account and click on Settings.
2. Select Accounts tab
3. Click on edit info
4. In the Name field, select the second radio button and enter the name of your choice. Click on Save Changes and you’re done!
Now, Gmail accepts any name even if it contains the term Google or Gmail. You can see from the below snapshot




Allowing the users to have their names contain the terms Gmail or Google is a serious vulnerability even though it doesn’t seem to be a major one. This is because a hacker or a malicious attacker can easily exploit this flaw and send phishing emails to other Gmail users asking for sensitive information such as their passwords. Most of the users don’t even hesitate to send their passwords since they believe that they are sending it to Gmail Team (or someone authorized). But in reality they are sending it to an attacker who uses these information to seek personal benefits.
So the bottomline is, if you get any emails that appears to have come from the Gmail Team or similar, don’t trust them! Anyone can send such emails to fool you and take away your personal details. Hope that Gmail will fix this vulnerability as soon as possible to avoid any disasters.

How to Make a Trojan Horse

Posted by smit sanghvi 0 comments




Most of you may be curious to know about how to make a Trojan or Virus on your own. Here is an answer for your curiosity. In this post I’ll show you how to make a simple Trojan on your own using C programming language. This Trojan when executed will eat up the hard disk space on the root drive (The drive on which Windows is installed, usually C: Drive) of the computer on which it is run.  Also this Trojan works pretty quickly and is capable of eating up approximately 1 GB of hard disk space for every minute it is run. So, I’ll call this as Space Eater Trojan. Since this Trojan is written using a high level programming language it is often undetected by antivirus. The source code for this Trojan is available for download at the end of this post. Let’s see how this Trojan works…
Before I move to explain the features of this Trojan you need to know what exactly is a Trojan horse and how it works. As most of us think a Trojan or a Trojan horse is not a virus. In simple words a Trojan horse is a program that appears to perform a desirable function but in fact performs undisclosed malicious functions that allow unauthorized access to the host machine or create a damage to the computer.
Now lets move to the working of our Trojan
The Trojan horse which I have made appears itself as an antivirus program that scans the computer and removes the threats. But in reality it does nothing but occupy the hard disk space on the root drive by just filling it up with a huge junk file. The rate at which it fills up the hard disk space it too high. As a result the the disk gets filled up to 100% with in minutes of running this Trojan. Once the disk space is full, the Trojan reports that the scan is complete. The victim will not be able to clean up the hard disk space using any cleanup program. This is because the Trojan intelligently creates a huge file in the WindowsSystem32 folder with the .dll extension. Since the junk file has the .dll extention it is often ignored by disk cleanup softwares. So for the victim, there is now way to recover the hard disk space unless reformatting his drive.
The algorithm of the Trojan is as follows
1. Search for the root drive
2. Navigate to WindowsSystem32 on the root drive
3. Create the file named “spceshot.dll
4. Start dumping the junk data onto the above file and keep increasing it’s size until the drive is full
5. Once the drive is full, stop the process.
You can download the Trojan source code HERE. Please note that I have not included the executabe for security reasons. You need to compile it to obtain the executable.

How to compile, test and remove the damage?

Compilation:
For step-by-step compilation guide, refer my post How to compile C Programs.
Testing:
To test the Trojan,  just run the SpaceEater.exe file on your computer. It’ll generate a warning message at the beginning. Once you accept it, the Trojan runs and eats up hard disk space.
NOTE: To remove the warning message you’ve to edit the source code and then re-compile it.
How to remove the Damage and free up the space?
To remove the damage and free up the space, just type the following in the “run” dialog box.
%systemroot%system32
Now search for the file “spceshot.dll“. Just delete it and you’re done. No need to re-format the hard disk.
 NOTE: You can also change the ICON of the virus to make it look like a legitimate program. This method is described in the post: How to Change the ICON of an EXE file ?
Please pass your comments and tell me your opinion. I am waiting just for your comments…



Are you fed up with your slow PC? Well you can Speed Up your PC by 3 times. In this post you’ll find some of the most significant ways to speed up your PC. For your convenience, I ’ll split this post into 2 parts.
1. Automatic Ways to Speed Up PC (Using PC Speed Up Softwares)
2. Manual Ways to Speed Up PC

Automatic Ways to Speed Up PC

You can use a PC Optimizer Tool to automatically boost the Speed of your PC without the need to worry about the manual ways of doing it. These tools will automatically find and fix upto 99% of your PC errors by optimizing the Windows registry, cleaning up junk files, removing unwanted items from the start up etc. This can speed up your PC and Internet speed by upto 3 times. Here are some of the best PC Optimizer Programs that I recommend.
1. Perfect Optimizer
2. Registry Easy
Using a PC Optimizer is the easiest way to speed up your PC. This is because, most of the performance tweaks such as Registry Cleanup cannot be done manually.

Manual Ways to Speed Up Your PC

1. Free Up Disk Space to increase the speed of your PC
  • Remove temporary Internet files.
  • Empty the Recycle Bin.
  • Remove Windows temporary files.
  • Uninstall Programs that you no longer use.
2. Periodically Perform Hard Disk Defragment. This can Speed Up your PC significantly.
3. Clean Up your Registry (Highly Recommended)
Cleaning Up your Windows Registry is very much necessary to speed up your PC. Unfortunately you cannot do this manually. You have to use a Registry Cleaner to do this. Here is the best registry cleaner on the web.
Registry Easy
A complete review of registry cleaners can be found at Registry Cleaner Reviews
4. Clean Up the browser cache to Speed Up your Internet.
5. Install a good Antispyware software
Spywares can really hurt the performance of your PC. So, install a good anti-spyware to protect your PC from spywares and improve the speed of your PC. I recommend the following Antispywares to protect your PC.
1. Spyware Cease
2. Nodware Anti-Spyware 

Which is the Best Way to Speed Up my PC? (Auto or Manual)

The best way to speed Up your PC is by using a PC Optimizer such as Perfect Optimizer or Registry Easy. This is because, manual ways can only perform 30-40% of the tweaks to improve the speed of your PC, but the most important aspect of the Speed Up process such as Registry clean Up and other advanced performance tweaks can only be done using a PC Optimizer software. So if you are serious about improving the speed of your PC, then you need to use a PC Optimizer.


Are you curious to know how to spy on a cell phone? Do you want to secretly spy on SMS text messages, calls, GPS locations and other confidential info of your child’s or spouse’s cell phone? Well here is a detailed tutorial on how to spy on cell phones.
Every day I get a lot of emails from people asking how to spy on cell phone. To spy on a given cell phone all you need to do is install a good cell phone spy software on the target cell phone and once you do this you can silently record every SMS and information about each call. You can also see GPS positions every thirty minutes.
The best Cell Phone Spy software that we recommend is Mobile Spy
Why Mobile Spy?
There exists many cell phone spy softwares on the market and hence people often get confused about which cell phone spy software to go for. To make this job simpler for you we personally tested some of the top cell phone spy softwares and based on the results we conclude Mobile Spy as be the best one.
Mobile Spy is one of the best and award winning cell phone spy softwares on the market with an affordable price. Mobile Spy team provides an excellent support and hence it becomes just a cakewalk to spy on your favorite cell phone! Today with an excessive usage of cell phones by many teenagers it becomes necessary for their parents to perform cell phone spying. So what are you waiting for? If you’re really serious to spy on a cell phone then Mobile Spy is for you. Go grab Mobile Spy now and expose the truth.

Mobile Spy  - The No.1 Cell Phone Spy Software

Mobile Spy is a perfect tool for parents to monitor their childern’s activity on thier cell phone!
Mobile Spy Features
Mobile Spy is a hybrid spy software/service which allows you to spy on your target cell phone in real time. This unique system records the activities of anyone who uses the compatible cell phone ( iPhone, Windows Mobile or Symbian OS smartphone). For this you need to install a small application onto the cell phone. This application starts at every boot of the phone but remains stealth and does not show up in the running process list. It runs in the background and will spy on every activity that takes place on the phone. Thus the spying feature is completely undetected!
Logging Features
1. Spy on Calls Log – Each incoming and outgoing number on the phone is logged along with duration and time stamp.
2. Spy on SMS – Every text message/MMS is logged even if the phone’s logs are deleted. Includes full text.
3. Spy on Location – The phones’s current location is frequently logged using GPS when signal is available.
4. Spy on Web Activity – Each address entered into Internet Explorer (or any browser) on the phone is logged.
5. This cell phone spy software works in total stealth mode. The person using the phone can never come to know about the presence of this spy software.
How it works
The working of Mobile Spy is very simple and needs no extra knowledge to install and use.
Step 1- After you purchase Mobile Spy you’ll get a link to download the software. Along with this you’ll get a username and password for you online control panel.
Step 2- Install the downloaded cell phone spy software onto any of the compatible cell phone. After installation the spy software starts recording all the activities on the cell phone.
Step 3- Login to your online control panel to see the logs containing the recorded information.
This is just a small list of Mobile Spy features. For a list of compatible phones, step-by-step installation guide and more details visit the Mobile Spy Homepage


In this post I will tell you about how the domain names are hacked and how they can be protected. The act of hacking domain names is commonly known as Domain Hijacking. For most of you, the term “domain hijacking” may seem to be like an alien. So let me first tell you what domain hijacking is all about.
Domain hijacking is a process by which Internet Domain Names are stolen from it’s legitimate owners. Domain hijacking is also known as domain theft. Before we can proceed to know how to hijack domain names, it is necessary to understand how the domain names operate and how they get associated with a particular web server (website).
The operation of domain name is as follows
Any website say for example gohacking.com consists of two parts. The domain name (gohacking.com) and the web hosting server where the files of the website are actually hosted. In reality, the domain name and the web hosting server (web server) are two different parts and hence they must be integrated before a website can operate successfully. The integration of domain name with the web hosting server is done as follows.
1. After registering a new domain name, we get a control panel where in we can have a full control of the domain.
2. From this domain control panel, we point our domain name to the web server where the website’s files are actually hosted.
For a clear understanding let me take up a small example.
John registers a new domain “abc.com” from an X domain registration company. He also purchases a hosting plan from Y hosting company. He uploads all of his files (.html, .php, javascripts etc.) to his web server (at Y). From the domain control panel (of X) he configures his domain name “abc.com” to point to his web server (of Y). Now whenever an Internet user types “abc.com”, the domain name “abc.com” is resolved to the target web server and the web page is displayed. This is how a website actually works.
What happens when a domain is hijacked
Now let’s see what happens when a domain name is hijacked. To hijack a domain name you just need to get access to the domain control panel and point the domain name to some other web server other than the original one. So to hijack a domain you need not gain access to the target web server.
For example, a hacker gets access to the domain control panel of  “abc.com”. From here the hacker re-configures the domain name to point it to some other web server (Z). Now whenever an Internet user tries to access “abc.com” he is taken to the hacker’s website (Z) and not to John’s original site (Y).
In this case the John’s domain name (abc.com) is said to be hijacked.
How the domain names are hijacked
To hijack a domain name, it’s necessary to gain access to the domain control panel of the target domain. For this you need the following ingredients
1. The domain registrar name for the target domain.
2. The administrative email address associated with the target domain.
These information can be obtained by accessing the WHOIS data of the target domain. To get access the WHOIS data, goto whois.domaintools.com, enter the target domain name and click on Lookup. Once the whois data is loaded, scroll down and you’ll see Whois Record. Under this you’ll get the “Administrative contact email address”.
To get the domain registrar name, look for something like this under the Whois Record. “Registration Service Provided By: XYZ Company”. Here XYZ Company is the domain registrar. In case if you don’t find this, then scroll up and you’ll see ICANN Registrar under the “Registry Data”. In this case, the ICANN registrar is the actual domain registrar.
The administrative email address associated with the domain is the backdoor to hijack the domain name. It is the key to unlock the domain control panel. So to take full control of the domain, the hacker will hack the administrative email associated with it. Email hacking has been discussed in my previous post how to hack an email account.
Once the hacker take full control of this email account, he will visit the domain registrar’s website and click on forgot password in the login page. There he will be asked to enter either the domain name or the administrative email address to initiate the password reset process. Once this is done all the details to reset the password will be sent to the administrative email address. Since the hacker has the access to this email account he can easily reset the password of domain control panel. After resetting the password, he logs into the control panel with the new password and from there he can hijack the domain within minutes.
How to protect the domain name from being hijacked
The best way to protect the domain name is to protect the administrative email account associated with the domain. If you loose this email account, you loose your domain. So refer my previous post on how to protect your email account from being hacked. Another best way to protect your domain is to go for private domain registration. When you register a domain name using the private registration option, all your personal details such as your name, address, phone and administrative email address are hidden from the public. So when a hacker performs a WHOIS lookup for you domain name, he will not be able to find your name, phone and administrative email address. So the private registration provides an extra security and protects your privacy. Private domain registration costs a bit extra amount but is really worth for it’s advantages. Every domain registrar provides an option to go for private registration, so when you purchase a new domain make sure that you select the private registration option.




Nokia is one of the largest selling phones across the globe.Most of us own a Nokia phone but are unaware of it’s originality.Are you keen to know whether your Nokia mobile phone is original or not? Then you are in the right place and this information is specially meant for you. Your phones IMEI (International Mobile Equipment Identity) number confirms your phone’s originality.
Press the following on your mobile *#06# to see your Phone’s IMEI number(serial number).
Then check the 7th and 8th numbers
Phone serial no. x x x x x x ? ? x x x x x x x

IF the Seventh & Eighth digits of your cell phone are 02 or 20 this means your cell phone was assembled in Emirates which is very Bad quality
IF the Seventh & Eighth digits of your cell phone are 08 or 80 this means your cell phone was manufactured in Germany which is fair quality
IF the Seventh & Eighth digits of your cell phone are 01 or 10 this means your cell phone was manufactured in Finland which is very Good
IF the Seventh & Eighth digits of your cell phone are 00 this means your cell phone was manufactured in original factory which is the best Mobile Quality
IF the Seventh & Eighth digits of your cell phone are 13 this means your cell phone was assembled in Azerbaijan which is very Bad quality and also dangerous for your health.



If your PC has multiple users then you can now display legal notice to every user before they login to your PC. This legal notice will be displayed at every startup just before the Desktop is loaded. Using this you can tell your friends about the do’s and dont’s in your computer when they login in your absence. Well you can do this pretty easily. For this there is one small registry hack. Here is the step-by-step instruction to do this.

1. Go to Start->Run, type regedit and hit ENTER
2. Navigate to the following key in the registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
\policies\system
On the right side pane look for “legalnoticecaption“, double click on it and enter the desired Legal Notice Caption. Next below this look for “legalnoticetext” and enter the desired Legal Notice Text. The legal notice text can be up to a page in it’s size so that it can include a set of do’s and dont’s for your computer. After you do this just restart your computer and upon the next startup you can see the legal notice information for your computer. This trick works on both XP and Vista. You can also try it on Windows 7 and should work with no problems.
Hope you like this post. Pass your comments.



Most of you may be curious to know how to find the IP address of your friend’s computer or to find the IP address of the person with whom you are chatting in Yahoo messenger or Gtalk. In this post I’ll show you how to find the IP address of a remote computer in simple steps.

I have created a PHP script to make it easier for you to find the IP address of the remote computer of your choice. Here is a step-by-step process to find out the IP address.
1. Download the IP Finder script (IP_Finder.ZIP) that I have created.
2. Open a new account in X10Hosting (or any free host that supports PHP).
3. Extract the IP_Finder.ZIP file and upload the two files ip.php and ip_log.txt into the root folder of your hosting account using the File Manager.
4. You can rename the ip.php to any name of your choice.
5. Set the permission to 777 on ip_log.txt.
Now you are all set to find the IP address of your friend or any remote computer of your choice. All you have to do is send the link of ip.php to your friend or the person with whom you’re chatting. Once the person click’s on the link, his/her IP address is recorded in the file ip_log.txt.
For your better understanding let’s take up the following example.
Suppose you open a new account in X10hosting.com with the subdomain as abc, then your IP Finder link would be
http://abc.x10hosting.com/ip.php
You have to send the above link to you friend via email or while chatting and ask him to visit that link. Once your friend clicks on the link, his IP address will be recorded along with the Date and Time in the ip_log.txt file. After recording the IP address, the script will redirect the person to google.com so as to avoid any suspicion.
To find the recorded IP address check the logs using the following link.
http://abc.x10hosting.com/ip_log.php
The sample log will be in the following format
79.92.144.237 Thursday 07th of May 2009 05:31:27 PM
59.45.144.237 Thursday 07th of May 2009 05:31:28 PM
123.92.144.237 Thursday 07th of May 2009 05:31:31 PM
NOTE: You have to replace abc with your subdomain name.
I hope this helps. Express your opinion and suggestions through comments.

Hack BSNL Broadband for Speed

Posted by smit sanghvi 0 comments


If you are a BSNL broadband user, chances are that you are facing frequent DNS issues. Their DNS servers are just unresponsive. The look up takes a long duration and many times just time out. The solution? There is small hack on BSNL for this. Use third party DNS servers instead of BSNL DNS servers or run your own one like djbdns. The easiest options is to use OpenDNS. Just reconfigure your network to use the following DNS servers:
208.67.222.222
208.67.220.220
Detailed instructions specific to operating system or your BSNL modem are available in the OpenDNS website itself. After I reconfigured my BSNL modem to use the above 2 IP addresses, my DNS problems just vanished! Other ‘freebies’ that come with OpenDNS are phishing filters and automatic URL correction. Even if your service provider’s DNS servers are working fine, you can still use OpenDNS just for these two special features.After you hack BSNL DNS servers, you will see a noticeable improvement in your broadband speed.

How to Compile C Programs

Posted by smit sanghvi 0 comments



In many of my previous posts especially in the VIRUS CREATION section, I have used C as the programming language. If you’re new to C programming and find it difficult to compile the C source codes then this post is for you. Here is a step-by-step procedure to install Borland C++ compiler 5.5 and compile C programs.

How to install Borland C++ compiler

1. Download Borland C++ compiler 5.5 (for Windows platform) from the following link.
http://www.codegear.com/downloads/free/cppbuilder
2. After you download, run freecommandlinetools.exe. The default installation path would be
C:\Borland\BCC55

How to configure Borland C++ compiler

1. After you install Borland C++ compier, create two new Text Documents
2. Open the first New Text Document.txt file and add the following two lines into it
-I”c:\Borland\Bcc55\include”
-L”c:\Borland\Bcc55\lib”
Save changes and close the file. Now rename the file from New Text Document.txt to bcc32.cfg.
3. Open the second New Text Document (2).txt file and add the following line into it
-L”c:\Borland\Bcc55\lib”
Save changes and close the file. Now rename the file from New Text Document (2).txt to ilink32.cfg.
4. Now copy the two files bcc32.cfg and ilink32.cfg, navigate to C:\Borland\BCC55\Bin and paste them.

How to compile the C source code (.C files)

1. You need to place the .C (example.c) file to be compiled in the following location
C:\Borland\BCC55\Bin
2. Now goto command prompt (Start->Run->type cmd->Enter)
3. Make the following path as the present working directory (use CD command)
C:\Borland\BCC55\Bin
4. To compile the file (example.c) use the following command
bcc32 example.c
5. Now if there exists no error in the source code you’ll get an executable file (example.exe) in the same location (C:\Borland\BCC55\Bin).
6. Now you have successfully compiled the source code into an executable file(.exe file).
NOTE: The above tutorial assumes that you’ve installed the compiler onto the C: drive (by default).

Most of us get SPAM every day. Some of us get more and some little. Even a newly created email account will begin to receive spam just after a few days of it’s creation. Many times we wonder where these spam come from and why? But this question remains unanswered within ourselves. So in this post I will try my best to give every possible information about the spam and will also tell you about how to combat spam.
What is SPAM?
Spam is the abuse of electronic messaging systems (including most broadcast media, digital delivery systems) to send unsolicited bulk messages indiscriminately. Most widely recognized form of spam is email spam.
Where do these SPAM come from?
These spam come only from spammers and never from a legitimate user or a company. These spammers send a single email to hundreds (some times thousands or millions) of email addresses at a time. They either send it manually or use spambots to automate the process of spamming.
Why do spammers SPAM?
The main goal of spammers is to send the spam (unsolicited bulk messages) to as many people as possible in order to make profit. For example, John builds a small website to sell an ebook which gives information about weight loss. In order to make sales he needs publicity for his website. Instead of spending money on advertising, John decides to create an email which contains information about his site along with it’s link and send this email to say 100 email addresses in his contact list. If 1 person out of hundred buy this book john gets $10. What if he sends this email to 1000s of email addresses. He gets $100. Imagine, if he sends this email to 1 Million email addresses he gets $100000.
Now I hope you understood the idea behind spamming. So in order to make money, spammers send their advertising emails to as many people as possible without respecting the recipient’s privacy.
From where do SPAMmers get my email address?
On the Internet there exists many sites who collect the email IDs of people and sell them to spammers in bulk. Most often, people sign up for monthly newsletters and take up surveys. This is the time where these scam sites get their email addresses. Also many spammers collect email addresses by using spambots. These spambots collect email addresses from the Internet in order to build mailing lists. Such spambots are web crawlers that can gather email addresses from Web sites, newsgroups, forums, special-interest group (SIG) postings, and chat-room conversations.
Spammers also use the trick of creating Hoax Emails for gathering a huge list of email IDs. For example, a spammer sends a hoax email which says “Forward this Message to Help Severely Burned Child”. This email claims that 11 cents will be donated to the child’s family every time the message is sent to others. Most of the people believe this and start forwarding this hoax email to all of the IDs in their contact list. In this way the email spreads rapidly and eventually when it reaches the creator (spammer), the spammer gets a huge list of valid email addresses in the email header. When you get these kind of hoax emails, you can see for yourself in the email header which contains a huge list of email addresses of all those people to whom the email is being forwarded to. This is one of the effective methods used by spammers to gather email addresses.
Is SPAMming legal?
Spamming is completely illegal. Yet it is really difficult to stop spammers from spamming since they keep moving from one hosting company to another after getting banned. This makes it practically impossible to catch spammers and prosecute them.
How to protect my email account from getting SPAMmed?
The following methods can be used to combat email spam.
1. Use spam filters for your email account. If you’re using email services like Gmail, Yahoo, Hotmail etc. then spam filters are used by defaut. Each spam filter has it’s algorithm to detect spam emails and will automatically move them to SPAM folder. This keeps your inbox free from spam. However some spam emails become successful to make their way into the inbox by successfully bypassing the filters.
2. Do not post your email address in public forums, user comments and chat-rooms. Give your email address only to trustworthy websites while signing up for newsletters.
3. While taking up online surveys and filling up feedback forms, it is better not to give your personal email address. Instead singup for a dummy email account and use this for surveys and feedback forms.
4. While posting your contact email address on your website use this format: emailaddress [at] yoursite.com instead of emailaddress@yoursite.com. This protects your email address from being indexed by spambots.
5. Do not respond to hoax messages. When you receive a hoax email, avoid forwarding it to your friends. Examples of hoax messages can be found at www.hoax-slayer.com. If you really want to forward it to your friends, make sure that you use “Bcc” (blind certified copy) option to send the email. This will hide all the email IDs to which the mail is forwarded to.
I hope this helps. Pass your suggestions and feedback via comments.

In this post I will show how to create a simple virus that disables/blocks the USB ports on the computer (PC). As usual I use my favorite C programming language to create this virus. Anyone with a basic knowledge of C language should be able to understand the working of this virus program.
Once this virus is executed it will immediately disable all the USB ports on the computer. As a result the you’ll will not be able to use your pen drive or any other USB peripheral on the computer. The source code for this virus is available for download. You can test this virus on your own computer without any worries since I have also given a program to re-enable all the USB ports.
1. Download the USB_Block.rar file on to your computer.
2. It contains the following 4 files.

  • block_usb.c (source code)
  • unblock_usb.c (source code)
3. You need to compile them before you can run it. A step-by-step procedure to compile C programs is given in my post - How to Compile C Programs.
3. Upon compilation of block_usb.c you get block_usb.exe which is a simple virus that will block (disable) all the USB ports on the computer upon execution (double click).
4. To test this virus, just run the block_usb.exe file and insert a USB pen drive (thumb drive). Now you can see that your pen drive will never get detected. To re-enable the USB ports just run the unblock_usb.exe  (you need to compile unblock_usb.c) file. Now insert the pen drive and it should get detected.
5. You can also change the icon of this file to make it look like a legitimate program.

Is your computer infected with virus? Do you often get mysterious error messages? Well this is a common problem faced by almost all the computer users across the globe. There are many viruses and worms out there that could infect your computer. Some are harmless, but, they do have the capacity to do any number of nasty things, up to and including, erasing all data from your computer. However there are ways to keep viruses away from your PC. Here are the 12 tips to maintain a virus free computer.
1. Email is one of the common ways by which your computer can catch a virus. So it is always recommended to stay away from SPAM. Open only those emails that has it’s origin from a trusted source such as those which comes from your contact list. If you are using your own private email host (other than gmail, yahoo, hotmail etc.) then it is highly recommended that you use a good anti-spam software. And finally NEVER click on any links in the emails that comes from untrusted sources.
2. USB thumb/pen drives is another common way by which viruses spread rapidly. So it is always a good habit to perform a virus scan before copying any data onto your computer. NEVER double-click the pen drive to open it. Instead right-click on it and select the option “open”. This is a safe way to open a pen drive.
3. Be careful about using MS Outlook. Outlook is more susceptible to worms than other e-mail programs, unless you have efficient Anti-Virus programs running. Use Pegasus or Thunderbird (by Mozilla), or a web-based program such as Hotmail or Yahoo (In Firefox).
4. As we all know, Internet is the main source of all the malicious programs including viruses, worms, trojans etc. In fact Internet contributes to virus infection by up to 80%. So here are the tips for safe surfing habits so that you can ward off virus infection up to the maximum extent.

  • Don’t click on pop-up windows that announce a sudden disaster in your city or announce that you’ve won an hourly prize. They are the ways to mislead Internet users and you should never trust them.
  • You can also use a pop-up blocker to automatically block those pop-ups.
5. Most of us use search engines like Google to find what we are looking for. It is quite obvious for a malicious website to get listed in the search results. So to avoid visiting those untrusted malicious websites, you can download and install the AVG LinkScanner which is a freeware. This tool can become very handy and will help you to stay away from malicious websites.
6. Install a good antivirus software and keep it updated. Also perform full system scan periodically. It is highly recommended that you turn on the automatic update feature. This is the most essential task to protect your PC from virues. If PC security is your first option then it is recommended that you go for a shareware antivirus software over the free ones. Most of the antivirus supports the Auto-Protect feature that provides realtime security for your PC. Make sure that this feature is turned on.
7. Install a good Antispyware program, that operates against Internet malware and spyware.
8. Never open any email attachments that come from untrusted sources. If it is a picture, text or sound file (these attachments end in the extensions .txt, .jpeg, .gif, .bmp, .tif, .mp3, .htm, .html, and .avi), you are probably safe, but still do a scan before opening.
9. Do not use disks that other people gave you, even from work. The disk could be infected with a virus. Of course, you can run a virus scan on it first to check it out.
10. Set up your Windows Update to automatically download patches and upgrades. This will allow your computer to automatically download any updates to both the operating system and Internet Explorer. These updates fix security holes in both pieces of software.
11. While you download files from untrusted websites/sources such as torrents, warez etc. make sure that you run a virus scan before executing them.
12. And finally it is recommended not to visit the websites that feature illegal/unwanted stuffs such as cracks, serials, warez etc. since they contribute much in spreading of viruses and other malicious programs.

If your PC has multiple users then you can now display legal notice to every user before they login to your PC. This legal notice will be displayed at every startup just before the Desktop is loaded. Using this you can tell your friends about the do’s and dont’s in your computer when they login in your absence. Well you can do this pretty easily. For this there is one small registry hack. Here is the step-by-step instruction to do this.

1. Go to Start->Run, type regedit and hit ENTER
2. Navigate to the following key in the registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
\policies\system
On the right side pane look for “legalnoticecaption“, double click on it and enter the desired Legal Notice Caption. Next below this look for “legalnoticetext” and enter the desired Legal Notice Text. The legal notice text can be up to a page in it’s size so that it can include a set of do’s and dont’s for your computer. After you do this just restart your computer and upon the next startup you can see the legal notice information for your computer. This trick works on both XP and Vista. You can also try it on Windows 7 and should work with no problems.
Hope you like this post. Pass your comments.

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Anti-Spywares

Do you have an anti-spyware program installed on your computer? If your answer is no, then you are under a serious risk of being exposed to thousands of spyware and adware programs across the Internet. Just having an Antivirus installed is not enough! If you are a frequent Internet user then there is a desperate need for you to use a good anti-spyware program to protect your Computer from dangerous threats.
The following are some of the major risks of spywares
1. Spyware programs are designed specifically to monitor and record your behaviors, such as track websites you visit online, or monitor your use of other web-based programs.
2. Hackers mainly use spywares to steal sensitive information such as email passwords and credit card data. So it is a must to have an anti-spyware installed on your computer. Antivirus isn’t just enough today!
3. Spyware is also capable of performing activities such as completely shutting down your computer, or permanently erasing or damaging files. Valuable client files could be destroyed in a blink of an eye, making this type of spyware threat high-risk.
Did you know? Spywares are more dangerous than viruses. So, use a good anti-spyware to avoid the risk of being exposed to spywares.

1. Spyware Cease

spywareceaseSpyware Cease effectively scans, removes and blocks spyware, trojans, keyloggers, adware, malicious tracking cookies, browser hijackers, worms, phishing attacks, rootkits, bots, malicious BHOs, dialers and many more spyware threats.
Spyware Cease is a powerful spyware and malware remover but consumes slightly computer resources. With Spyware Cease, you can safeguard PC security and enhance PC performance with ease:
  • 100% Real-Time Guard
    Spyware Cease guards your computer and ensures spyware is prevented before it sneaks into your system.
  • Safe Internet Searching
    Spyware Cease safeguards that your online activities, such as shopping, banking transactions and Internet surfing, are completely safe with ease.
  • Custom Fix for Specific Unsolved Spyware
    If you have a problem we can not automatically remove with the latest Spyware Cease, our expert team will create the complete custom fix for your specific spyware problems.
  • Enhance Computer Performance
    Spyware Cease conserves computer resources by identifying and removing spyware programs that eat up your PC memory and CPU.

2. NoAdware

noadwareNoadware is constantly updated to identify the latest threats to your privacy. The software will scan your PC for different Spyware, Adware, Dialers, and Web Bug traces. These items not only create nuisances in the form of popups, system slowdowns and crashes, but many items actually record personal information about you, such as credit cards, social security numbers, or other sensitive information.
For more information on this program and download details visit the following link
NoAdware

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