Li Jun, the creator of the rampant computer virus Worm.Whboy, has produced an anti-virus software to kill Worm.Whboy and put it into use on a trial basis on some Chinese websites.

Li has also attached a letter to the software in which he apologizes to netizens for the harm this virus has done to them. However, Li has not given details on the dependability of the anti-virus software.

Originating in Wuhan, the virus received the first five-star severity rating ever issued by the Shanghai Information Technology Service Center because it could attack local area networks in government bureaus and companies and damage their programs and databases. The worm was most destructive about three months ago, but it is still causing problems.