Secunia reports in a security advisory the submitted discovery of a vulnerability in Adobe Acrobat/Reader that "potentially can be exploited by malicious people to compromise a user's system."
According to the site's alert posted earlier this week, the vulnerability "is caused due to a parsing and boundary error when splitting filename paths into components. This causes a stack-based buffer overflow when opening a file with an overly long, unhandled file extension."
It further warns that "successful exploitation requires that a user is tricked into opening a malicious PDF document," and advises users to update to version 6.0.2, as described in an Adobe technical document outlining issues addressed by the Acrobat 6.0.2 update and Adobe Reader 6.0.2 update.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.