[irundebian]

> If the user is already careless enough to connect untrusted devices and/or opening random email attachments, then I have no trust in said user to heed any of the following warnings, as he/she already had to ignore previous best practice warnings to get there in the first place.

Don't blame the user, when we as computer scientists are too stupid to build secure systems. I expect from an computer system / software that I don't get infected if I plug in a USB stick or open a PDF file. The software devs of operatings systems and applications as well as hardware vendors are to blame. That's it.

[Dylan16807]

If you want to protect the user from email attachments from strangers, block them all, don't base it on a scan that picks up some threats.