Panda Security reports increased spread and success of popup “security warnings.” These warnings popup when people surf the Web and hit a malicious or infected Website, and keep flashing their warnings until the user goes to the link, at which time they get infected.
No legitimate security company would do this to a
computer, so don’t click the link. Instead, disconnect from the Internet,
clear your browser history and restart your computer. If your browser is still flashing warnings, the system will need to be disinfected through anti-virus or a computer restoration service.