Securityemo writes "The Register is running an article about a new method to bypass antivirus software, discovered by Matousec. 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. Here's the original research paper." El Reg notes that "The technique works even when Windows is running under an account with limited privileges," but "it requires a large amount of code to be loaded onto the targeted machine, making it impractical for shellcode-based attacks or attacks that rely on speed and stealth. It can also be carried out only when an attacker already has the ability to run a binary on the targeted PC."

Last month we discussed news that Valve's upcoming shooter Left 4 Dead 2 had been denied classification in Australia, which meant the game could not be legally sold there. Now, after a series of edits which removed "considerable amounts of gore from gameplay," Australia's classification board has given the game an MA15+ rating. Their new report (PDF) says, "No wound detail is shown and the implicitly dead bodies and blood splatter disappear as they touch the ground. ... The board notes that the game no longer contains depictions of decapitation, dismemberment, wound detail or piles of dead bodies lying about the environment." The unmodified version of the game may still be approved, pending a review that concludes on October 22nd.