Zeus is a particularly nasty Trojan horse that has infected millions of computers, most of them in the United States. Once Zeus has compromised a computer, it stays dormant until a victim logs into a bank site, and then it steals the victim’s passwords and drains the victim’s accounts.
Zeus was first detected in 2007 and is only getting more active. According to researchers at the security firm Trend Micro, incidents of Zeus have risen steadily this year.
A Facebook, which has been a principal mode of transmission, actively scans for malware and has offered users the opportunity to enroll in self-remediation procedures such as a Scan-And-Repair malware scan that can scan or and remove malware from their devices.