Many people are reporting in various forums about a flaw on the clipboard function of operating systems.

The flaw is that when a user surfs to a seemingly legitimate site, a malicious link is copied to the clipboard of his computer. There is no way to get rid of it according to The Register unless the user reboots his or her computer.

A blog called Spyware Sucks notes that this flaw is based on an Adobe Flash code.

The users who made reports say that they are using Firefox with either a Mac OS X or Windows operating system.

Source: The Register