Any email client that can be set to automatically open attachments is at risk (this is one of the 'features' in OE that virus makers exploit :-). Combine that with the number of people who leave their default 'hide file names' checked & you have a lot of users playing Russian Roulette with a .45 automatic :-) Personally I use Eudora because it gives me the option when to open an attached file & in the interim stores it in a proprietary folder of my chioce, as opposed to a temp folder in the Windows directory.