So far, Microsoft's Outlook is the only e-mail program the virus is attacking, said Anita Chen, a spokeswoman for Trend Micro. Microsoft has said it will next week make available a modification to Outlook that will warn users about suspect e-mail attachments. The size of the virus's attachments are more likely to crash e-mail servers, experts said. None of the variants were very widespread. Trend Micro's Perry said he hoped that increased awareness among e-mail users would hold back the spread of the new virus.
People tend to be a little more cautious.