Website's engaged in the use of browser, operating system and other such exploits,
aswell as those engaged in exploits via social engineering.
Scam and malware site.
http://www.browserdefender.com/site/passwordrecoverytools.com/
Can you give us more details on this false positive? There is no malware on the web-site and testing by VirusTotal says the same. And yes, try updating your base.
*****
A virus infection site, designed to infect your machine with malicious code that performs functions without your knowledge or consent.
It is a technique frequently used by cyber-criminals to escape detection. Either this domain or a subdomain off it is dangerous.
Keep clear of sites like this.