Trying to disguise viruses through e-mail by making them look official.
For example, they always indicate that my mail has become undeliverable. When I receive an undeliverable message, the attachments (which is the message I send) are not blocked. Plus, the e-mail which was bounced back to me indicates who I was trying to send it to.
The virus producers have loss that one. I sent an e-mail to "user@domain.com" and got back a legitimate notice.
Just now I receive another e-mail, which OUtlook has blocked the "potentially dangerous attachment". It stated that I have visited illegal websites. Uhm, I don't think so. Plus with it being from the fake e-mail address of "abuse@gov.us" and not as official looking, the "terrorists" loss again.
However, I am about to change my e-mail address and see if I can avoid this garbage.
Hopefully, the government will catch these yahoos someday. 
I am sorry, but I just had to rant about this.
