Global virus activity captured by secure e-mail services company MessageLabs in November slid to half the October figure, the company said.
The proof of concept Mac OS X virus, which was discovered late last week and dubbed Macarena, includes comments in the code that indicate the author had a difficult time creating the malware.
The most popular antivirus applications on the market are rendered useless by around 80 percent of new malware, according to AusCERT.
The expected rush of viruses using social engineering techniques to capitalise on Christmas and New Years' Day has failed to materialise, with no threats utilising the tactic found by leading anti-virus companies.
Bugbear is on the way to overtaking Klez as the most prevalent virus in Australia, this week knocking Klez off the top of security companies' "top ten" virus lists. In many cases it's the first time in several months Klez hasn't topped the list.
Although the threat of computer viruses has been a latent concern for well over a decade, experts have warned that a massive viral outbreak has the potential to seriously compromise the very backbone of the Internet. ZDNet Australia takes a look at the viruses of 2001, and the threats for the future.
Anti-virus companies have played down the threat from the Nolor (aka Cailont) mass-mailing e-mail worm, a "garden variety" virus that spreads by sending itself to Windows address book entries through an executable attachment.
Security software vendors may soon side with US government authorities and intentionally fail to report "certain spyware" to customers if ordered by a court to remain quiet, according to a survey of leading firms.
The men at the helm of two of Australia's largest security software companies check each other's defences. Additional reading: Microsoft launches Australian security effort
Have we been lulled into a false sense of security by some anti-virus firms?
Antivirus software makers aim to protect users against Internet threats, but now have to face a new threat of their own: Microsoft.
Security vendor Symantec has once again pointed the knife at Apple Macintosh users.
Inexpensive software and hardware can help avert security disasters. Here's what you need to know to keep your business up and running.
This worm looks for systems already infected with SubSeven, then exploits the backdoor Trojan horse with new code.
An e-mail announcing a new Trojan horse scanner is itself an Internet worm that could flood e-mail servers with useless mail.
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