Securityemo writes: "The Register is running an article about a new method to bypass antivirus software, discovered by Maltousec. By sending benign code to the antivirus driver hooks, and switching it out for malicious code at the last moment, the antivirus can be completely bypassed. This attack is apparently much more reliable on multi-core systems. Link to original article here."
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals