Turn off your Java plug-ins RIGHT FUGGIN NOW!!!!!

[Earth Bound Misfit]

28. This is a particular vulnerability, a "route to infection" rather than an infection.

What is put on as “the infection” is a matter of the payload chosen by the person(s) utilizing the exploit for this vulnerability. You can check and see if you’re vulnerable, but the only way to see if you’re infected is through the use of security software, Anti-Virus, Anti-Malware, etc. There's no accounting for zero day threats however.

From what I've read/heard thus far this vulnerability is mainly being used by exploit packs, which are crimeware tools made to be stitched into Web sites so that when visitors come to the site with vulnerable/outdated browser plugins (like this one), the site can silently install malware on the visitor’s PC. Exploit packs can be stitched into porn sites as well as legitimate sites. All it takes is for an attacker to be able to insert one line of code into a compromised site.

Typically when you’ve been a victim of a “drive by” like this, you will notice the effects; some will block access to security related web sites, like Symantec, Avast, Avira, Malwarebytes etc; they can disable features on the Windows system like Control Panel, Windows Update, Safe Mode, block/disable anti-virus, or anti-malware apps & scanners, block executables, hide your files/desktop...and much much more.