The message, NAVCIRT Advisory 99-045, sent last week, said the so-called Year 2000 readiness programs are carried as an attachment to an e-mail message that may claim to originate from Microsoft Corp. or other well-known PC vendors.

CNN: Navy issues warning on Y2K Trojan horse

The US Computer Emergency Readiness Team (US-CERT) has told computer users to be wary of potential e-mail scams, as well as fake anti-virus and phishing attacks regarding the Japan earthquake and the tsunami disasters.

BBC: 'Radiation' text message is fake