Out-Of-Office Messages Are a Security Risk
I’m saying that, just like my email, I’m probably not watching my computers or accounts closely so now is a good time to drain my bank accounts, install malware on my PCs, and social engineer my coworkers. “Before he left Bob told me you could give me get an account on system X.” Plus you’re unfairly burdening someone else, and forcing people to make value judgments about urgency, too. If you are a manager of people I implore you to enforce the “if you’re gone be gone” policy with your team.
Source: lonesysadmin.net