No idea how much of it is true.

http://www.theregister.co.uk/2014/07/29/antivirus_blood_splattered_as_biz_warne
d_audit_or_die/

"If your application runs with the highest privileges, installs kernel
drivers, a packet filter and tries to handle anything your computer
may do ... your attack surface dramatically increased," Koret said in
a presentation at Syscan 360. (Slides here).

"AV engines make your computer more vulnerable with a varying degree
of performance penalty [and] is as vulnerable to zero day attacks as
the applications it tries to protect from. [It] can even lower the
operating system exploiting mitigations.

"Some AV companies don't give a f**k about security in their
products."

 []'s
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