McAfee has published the most common security threats recorded by its security labs in the second quarter, with bots, adware and spyware emerging as increasingly serious threats alongside traditional viruses and worms.
Overall, there was a 12% increase in all security threats from the first quarter, according to the security software company.
McAfee said bots in particular continued to plague enterprises because of their ability to covertly hijack a user’s computer, and remain hidden while they launched malicious attacks on other users.
“In just the first and second quarters of 2005, the number of exploited machines using backdoor techniques has increased by over 63% from the total at the end of 2004,” said Vincent Gullotto, vice-president of McAfee’s Avert labs.
McAfee said the increase in the number of bots had led to a big rise in the number of spyware and adware programs being unleashed into the wild.
The top viruses and worms in alphabetical order were: Exploit-Byteverify, W32/Mydoom.BG, W32/Mytob.gen and W32/Netsky.q.
The top bots were Gaobots, Mytobs, Polybots and Sdbots.
The most widely distributed spyware and adware programs were: Adware-180Solutions, Adware-abetterintrnt, Adware-BB, adware-dfc, Adware-GAIN, Adware-ISTbar.b, Adware-RBlast.dldr, Downloader-kl, IPSentry and RemoteSpy.