Why do I keep getting malware notices on Facebook?

Myrna from Twin Peaks, CA

Episode 1418 (44:31)

Facebook Headquarters

Myrna got locked out of Facebook when she had to reset her account due to malware. Leo says that's Facebook's latest technique for protecting the social network against malware. But like all antivirus utilities, there sometimes can be false positives that can trigger the lockdown. Myrna even ran her own scan with ESET. Leo says that's why he doesn't like antivirus software.