[eru]

> In general, the desktop antivirus space in 2021 is a mess. Because of the sheer number of malware, and some obfuscation techniques used by some of it, antivirus software has to use very broad regular expressions for describing the malware, counterbalanced by huge whitelists of known mainstream software.

Why do they have to use regular expressions?

[zinekeller]

"Regular expressions" as a concept, not PCRE regex.

[eru]

In the sense of https://en.wikipedia.org/wiki/Regular_language ?

That's even more restricted than PCRE regex. (Which is often a good thing, but not sure about here.)