Beijing: Technology experts in China have warned internet users to be alert against computer viruses based on the Valentine`s Day theme.
The China National Computer Virus Emergency Response Centre issued a circular Monday warning computer users not to open spam mail with Valentine`s Day messages in the subject line.
Such mails may contain worms like "Worm_ Blebla.B", "VBS_ILoveyou" and "Vbs_Valentin.A", according to Chinese daily.
The centre has warned online shoppers to be careful when ordering Valentine`s Day items as some pop-up advertisements may be bogus and cause computer problems.
Worms were also spreading through internet forums and online chatting tools, it said.