Software "back doors" that can give hackers full control over an infected PC are becoming more difficult to detect because of the sheer number of viruses and worms that can now distribute this type of malware, say security experts.
Messagelabs said on Tuesday that although it has intercepted more than 2.5 million copies of the most recent Bagle variant, the damage could have been far more severe had the same worm been released two years ago.
E-mail and internet users are being urged to look out for the latest variant of the Bagle family of malware which has started "spreading like wildfire" according to one security vendor.
Three new variants of the Bagle worm, which can disable the latest firewall protection in Windows, were discovered on Friday and antivirus companies are bracing for a surge of infections during the day.
The author of the latest variant of the Bagle worm has gone beyond penning just a piece of code: The writer has also included a poem in the document attachment on which the worm piggybacks.
Microsoft is cautiously optimistic that attempts to spread new variants of the Bagle virus exploiting an older vulnerability in its e-mail products will not be successful.
The number of new infections caused by the mass-mailing computer worm is dropping, say security experts -- suggesting Bagle may be toast before it reaches its cutoff date.
Bagle (Bagle.a@mm) looks like yet another worm designed by spammers, much like Sobig and MiMail. Here's how to toast it.
It's official: MyDoom is the fastest spreading e-mail virus or worm in computer history but what's even more incredible is that it does nothing special; instead, it relies largely upon classic, tried-and-true e-mail infection methods dating back at least four years.
Microsoft slams Google on privacy
Google's approach to privacy is a decade behind Microsoft, the Redmond software giant's chief privacy strategi… Watch it now
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