Adobe has another critical vulnerability in its Flash player. Unfortunately this weakness is present even in the most current version, 10,2,152. The attack is being delivered as a flash file embedded in an Excel email attachment. Adobe is expected to have this fixed with an update to be released the week of March 21. In the meantime, be aware of any email attachments containing spreadsheets and if you receive one unexpectedly, verify its validity with the source before opening.