Asia: 26 types of viruses are spreading strongly! Picture 1 According to Trend Micro, a leading provider of anti-virus and Internet content security software, these worms spread through 'untitled' e-mails, and so far are thought to have broken. nearly 16,000 computers. Experts find it difficult to prevent this worm because their attack begins when the 'no title' message is opened and they immediately transform the antivirus files in the device.