Almost all Windows users vulnerable to Flash zero-day attacks

Almost all Windows users vulnerable to Flash zero-day attacks: "The most-current versions of Flash Player -- 9.0.159.0 and 10.0.22.87) -- are vulnerable to hackers conducting drive-by attacks hosted on malicious and legitimate-but-compromised sites. Antivirus vendors have reported hundreds, in some cases thousands, of sites launching drive-bys against Flash."