The firm noted about 64.2 million virus attacks on computers last year, a 10 percent rise over the previous year.
The figure represents an average of 175 attacks per day, the Hanoi-based company said.
Asmany as 38,961 new virus strains emerged in Vietnam last year, with theW32.Salaty.PE malware being one of the most destructive, with about 4.2million attacks registered by the malware on computers across thenation.
This malicious programme infects files on the victim'sdevice and is designed to allow unauthorised users to download andlaunch other malware on the computer.
Meanwhile, at least 2,240websites of agencies and enterprises in Vietnam were attacked by bothdomestic and foreign hackers, according to BKAV.
BKAV last Mayreported on many cases of Yahoo! Messenger accounts coming into thecontrol of hackers. These hijacked accounts are then used to swindle thevictim's friends.
These attacks aim to fool users of accounts into clicking on a link in a message.
Thehackers use the stolen YM accounts to chat with people on the victim'sfriend lists, telling them that their friend is in trouble and needshelp in the form of a prepaid phone card and its activation code.
June2011 was considered as the ‘hottest month' for the Internet securitycommunity with a record high number of attacks on websites in Vietnam.
Nearly 200 websites on the same server, including the Binh Duong provincial Finance Department site, were attacked in June./.