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Why would a laptop have 520 viruses? - Page 4

post #31 of 39
Quote:
Originally Posted by B!0HaZard View Post
Pr0n is not the cause of viruses. Idiots downloading pr0n are. I would know, I'm 16.
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post #32 of 39
Finding over 500 viruses on someone's pc was just another day at work for me. Nothing unusual about that.
post #33 of 39
Not scanning in a while

Tracking cookies

Maybe?
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post #34 of 39
When you get a virus it writes codes within a file (most commonly .exe files). When that file is executed the virus code is also executed.
Viruses can do many strange and wonderful things; it might replicate itself into other currently executed files; it could set an AV hole to allow other unwanteds into the PC; it might even send a beacon back to its source for the creator to gain access to your PC; and that's just skimming the surface of what the little critters will do.
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post #35 of 39
Quote:
Originally Posted by to_the_zenith View Post
When you get a virus it writes codes within a file (most commonly .exe files). When that file is executed the virus code is also executed.
Viruses can do many strange and wonderful things; it might replicate itself into other currently executed files; it could set an AV hole to allow other unwanteds into the PC; it might even send a beacon back to its source for the creator to gain access to your PC; and that's just skimming the surface of what the little critters will do.
Hmmm... It would have to know the location of the .exe it wants to infect, right? So custom locations for all .exe files = profit?
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post #36 of 39
Well I guess that would help. but that's what antivirus is for.
AV should be the first app you install because its initial scan of the system - and future installs of apps - are basically registered in a database with the antivirus program to say "i am x bites long". If things don't match up on future scans, then the AV will perform an analysis of that file to try and find any suspect code.

That's why AV apps are so big these days, a) the filed database of your system which is part of the AV exe file that is loaded into the system memory, and b) the downloaded install file containing another large database of virus codes which it draws upon for cleaning instructions.

Note, this is only skimming the surface of basic AV principals; it's a lot more involved than even what I have explained.
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post #37 of 39
Thread Starter 
Quote:
Originally Posted by Kaiga View Post
Finding over 500 viruses on someone's pc was just another day at work for me. Nothing unusual about that.
Normally I only find about 30 to 150 instances of infection.

I guess the reason I've not encountered 500 is that I avoid working on the computers of people who are willfully computer illiterate and irrational (because they break things and blame me). The viruses I found on this particular computer actually came from a system that had been given to a friend.

It turned out there had been a miscommunication. He did not want me to disinfect it at all; he wanted me to wipe-it out and reinstall everything. That, I gladly did.
Edited by Majestic_Lizard - 1/3/11 at 10:55pm
    
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post #38 of 39
That's really not that bad. Here's one I cleaned out not too long ago. I've cleaned some that had over 1000 infections on it.


Edited by Pillz Here - 1/3/11 at 11:20pm
post #39 of 39
I worked on a dell that was heavily infected with everything. I used Norton 2010/Outpost Security Suite 7.0/Trojan Hunter/Pc Doctor. It had over 3,000 security risks. The cpu was running 100% all the time. Wouldnt allow me to END TASK the apps that was causing it. Took hours but I got rid of everything. Ended up reformatting the HDD. Wouldnt even let me do it b4 cause all the viruses.
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