1
vote
1answer
73 views

Detecting code source variants of the same function [closed]

Suppose I have this JavaScript malicious function f1() : <SCRIPT type="text/javascript"> function f1(){ a=1; b=2; c=a+b; } </SCRIPT> This function is embedded within a larger ...
2
votes
4answers
656 views

Are malicious scripts in batch files detected by antiviruses?

we have many scripts in shared folders in our IT Department. Are malicious scripts in batch files detected by antiviruses?
22
votes
4answers
11k views

How do you know your server has been compromised?

I recently helped a client who had their server hacked. The hackers added some PHP code into the header of the homepage redirecting the user to a porn website — but only if they came from Google. This ...