What causes a hack to be detected? (VAC)

[jKnox]

I'm wondering what determines hacks for games like CSS to be either Undetected or Detected by VAC. As a side question, what is the difference between external and internal hacks? I'm new to hacking so apologies if this is a newb question...hopefully this is the right area to post.

 

[BlackPitchPL]

Simple way external you dont write to addy just read and it's not display in game but on areo windows internal is that when you inject dll and draw in game menu so i hope i answered for you question

 

[maxsvett]

VAC can also detect external hacks through checking .exe signatures. If the assembly of your program looks suspiciously much like a typical ESP it might trigger a VAC ban.

Some people use the scripting language Python to write their External ESP's because it's interpreted (compiled in real time as the program runs) and more difficult to detect.

 

[NubTIK]

Information. I listed a few things in this thread.

 

[zebuilin]

As far as I know VAC does MD5 checking and manual mapping checks.
"MD5 hash can be bypassed with hook gates and function encryption. [...] I try to match the MD5 of xfire.dll as much as possible (99%), have the dll named xfire.dll, the injector named xfire.exe, and have the same EAT/IAT as xfire.dll does then just call LoadLibraryA. Once you defeat the two main methods that VAC uses to catch hacks, you're pretty much invincible." -Gir489 (The guy who made Darkstorm)