Scareware scammers are staking advantage of rumours about an "unnamed app" that supposedly poses a security risk to Facebook users in order to trick users into sites slinging rogue security software packages.
Searching on Google for the term "Facebook unnamed app" leads to numerous hacker-poisoned search engine results prepared for the scam, which redirect to malware distribution portals. A blog posting by Rik Ferguson of Trend Micro
explains that the Facebook unnamed app security threat is just a rumour, but the threat of searching for the term is all too real.