IT security specialist Finjan has warned users to be wary of
an application targeting people on Facebook.
The company warned
that a fake Facebook site is using malicious Javascript based on an
old "Flash Player upgrade installation" trick to entice the user to
download an upgrade in order to watch a video. Finjan said the
upgrade is actually malware containing the CAPTCHA pop-up.
The malware copies a couple files to C:\Windows, deletes itself
and creates a few Registry keys. F-Secure has detected the malware
as Trojan:W32/Agent.MDN.
With millions of people connected on Facebook, and the fact that
the site allows people to share images, video pictures and
applications, users are increasingly being
targeted by hackers attempting to exploit social networking to
spread malware. URL filtering software, which contains whitelists
of sites users are allowed to visit or blacklists rogue sites, can
stop users inadvertently going tom a site that infects their
PCs.