Posts tagged virus
How to remove hijack virus?
Dec 3rd
You may have read news about planes being hijacked. For example a passenger plane which is supposed to go to London may be hijacked by terrorists and flown to Turkey. The hijack virus does just that. If you key in a website address in your browser’s address bar and press ‘Enter’ then instead of going to that website the browser may open some other website such as an adult website or an advertisement website or a search engine website. If this happens in your computer then your browser has been infected by a hijack virus.
Why does this happen, you may wonder? This means a hijack virus has entered your computer without your knowledge and is working at its will. You can remove hijack virus and prevent it from happening using some software.
Process Guard is one such software. Just search for this software atwww.download.com and install it in your computer. This program will guard your computer against these hijack viruses.
Anti-virus, Attack, backdoor, hijacking, hole, HTTPS, Key, Key loggers, @mm
Dec 3rd
No matter how many firewall or Anti-virus software you have installed in your computer, still your computer can be attacked. Talking about computer security, there are many terms that are used quite often. You hear about them often or read about them but still if you are not very sure about their meanings then you have come to the right page. Here we will see the definitions and meanings of these terms.
- Anti-virus: Anti-virus is a software application. It will scan the computer and tell us if the computer is infected by a trojon, virus or worm. If the Anti-virus software is running then it will protect the computer and inform whenever a virus tries to enter the computer. But these Anti-virus software has to be updated very often. Only then they will be equipped with the power to identify and clean the new viruses.
- Attack: Attack refers to the state where your computer’s control is taken over by a hacker. This may happen due to many reasons. It may be just for a joke. It may be to steal your personal particulars.
- Backdoor: This is also referred to as Trapdoor. When a software is programmed the programmer will leave a backdoor entry. This is usually to rectify errors and problems remotely after the program is installed. But if this information is known to others then it is dangerous. The hackers may use this backdoor entry to enter into the program.
- Hijacking: When someone is working on a computer if some other person captures this computer and uses as per his wish then this is called hijacking. When someone leaves his computer unattended and somebody else start using this computer without the owner’s permission then this is also called hijacking. Taking control of a computer through internet is also hijacking. In this way the hijacker can be located anywhere in the world.
- Hole: A hole is a bug inside the program. This bug may be exploited by others to enter the program. When Microsoft announces that it has released some security Patch files in its website and asks you to download and update your OS, it means that there is a HOLE in Windows that this patch file is going to fix.
- HTTPS: HTTPS stands for Hypertext Transfer Protocol Secure. HTTP is the normal protocol for most of the websites. More secure sites uses HTTPS instead of HTTP. Usually the login pages use https for authentication.
- KEY: In windows registry these keys are used to store information about the hardware and software installed in the computer. Whenever you install a software or uninstall a software these keys are updated. If any virus changes or modifies these keys then your computer may not function properly.
- Key Loggers: This method is used to capture personal details such as login name, password, credit card details etc, by hackers.
- @mm : This is usually a suffix to a virus name. If a virus has this extension then it means that this virus sends multiple mails. MM stands for Mass Mailer. If the suffix just has a single M then that virus is a Mailer. Which means it will not send emails but will be attached to mails as an attachment in the mails a person sends.
What is ‘My Doom’ Virus?
Dec 3rd
‘My Doom‘ is a virus that spreads very fast. My doom spreads faster than many other viruses. Microsoft announced that they will award US$ 1 million for anyone who identifies the person who developed the my doom virus. This virus spreads through emails. The subject line of infected emails contain one of the following phrases.
- test
- hi
- hello
- Mail Delivery System Mail Transaction Failed Server Report
- Status Error
And the body of this email contains any of the following message
- Mail transaction failed. Partial message is available.
- The message contains Unicode characters and has been sent as a binary attachment. The message cannot be represented in 7-bit ASCII encoding and has been sent as a binary attachment.
This email may contain one or two attachments. The attached files may appear to be safe files with .htm, .txt, or .doc extensions. The second attached file may be one of .pif, .scr, .exe, .cmd, .bat or .zip extension. If you open any of these attachments then the ‘My doom’ virus gets installed in your computer. Therefore if you receive any such emails with attachments with these extensions then do not open these files. Once your computer is affected then the virus uses your Outlook contacts list and composes an email with the virus infected files attached and sends the email to all the contacts. Once your computer is infected with my doom virus the hacker can look at your computer files, delete them or install any applications. If you have an anti-virus software installed then update your antivirus software.
Worm Vs Virus
Dec 3rd
Whenever we get news about viruses some are referred as viruses and some are referred as worms. Therefore many do not know the difference between virus and worm.
Viruses are computer programs that multiply themselves. These programs will get embedded into other programs and hide inside them. Some viruses even enter into Operating Systems and function as per their commands. But viruses cannot spread from one computer to another computer unless it is attached purposely in an email and send to another computer manually.
Worms are also computer programs that multiply themselves. But instead of multiplying and spreading in the same computer they spread between one computer to another computer. The whole system is affected by the worm. Therefore the computer’s performance is affected and slows down. Worm computer will be in the network and destroy the memory. It will identify other computers in the network and spread to them. To whichever computer it goes it will access the address book in that computer and send itself to all the addresses.
Therefore you can say that Worms are created for the purpose of spreading between computers and Viruses are programmed to stay and multiply in the same computer.
Worms take control of your computer while viruses delete files from your computer.
In both cases, it destroys your computer. So it is a good practice to protect your computer from them.
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