Computer viruses cause Vietnam "time damage" worth VND559 billion (US$26.7 million) every month, according to a new report by Vietnam Internet security firm Bkav.
The estimation, released May 10, was based on the incomes of the computer users and the time their work was interrupted by virus attacks, Saigon Tiep Thi reported.
Vietnam was hit by nearly seven million computer virus attacks last month, says the Hanoi-based Back Khoa Anti-virus center.
It says the country loses VND6.7 trillion ($320.2 million) to cyber viruses a year and each person suffers an average annual damage of VND1,342,000 ($64).
The center also says that most of the computers were infected through USBs, which were found involved in 88 percent of the virus attacks.
Another cause of virus attacks were careless users who are easily tempted to click on strange links recommended through Yahoo Messenger and Facebook, it said.
Internet experts have warned that clicking on those links can expose the computers to virus codes or reveal the users' passwords for the programs they are using.
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