Lazy hackers port ancient Linux Trojan to Mac OS X

Hackers are testing new Mac malware that they've ported from a nine-year-old Trojan horse originally written for Linux, according to security experts.

The malware, dubbed "Tsunami," has been circulating in limited numbers since last week, said researchers at the Slovakian antivirus firm, ESET Security.

Tsunami first popped up last week, when ESET malware researcher Robert Lipovsky provided some bare bones information on the Trojan. "We've seen backdoors [on the Mac] before, but these malware writers are simply reusing existing code instead of writing something new," said Lipovsky in an interview at the time. "It's a lot easier for them." Lipovsky was referring to the code similarities between the Mac malware and a line of backdoor Trojans that targeted Linux machines as far back as 2002.