Some kind of identity theft attempt? Never seen this before

I had two messages in my Comcast email in box telling me that two messages that were attempted to two Yahoo.com addresses (neither of which I know about or tried to send to) had failed. Then I had several messages from mailer-daemon mentioning the mail failure, that were mostly written in Russian (which I recognize because I studied it in school).

Am I at risk for anything? How did someone attempt to send messages using my email? If I have been hacked, what should I do - contact Comcast?

BTW, I have already changed my email password, and I have stopped leaving my email logged in even when I’m not looking at it.

This happened to me when someone(some bot?) spoofed my email address…basically sent out a bunch of spam using my email address as the sender. I changed my passwords and the mailer-daemon messages tailed off. But I don’t know if you can protect against spoofing attacks. All it takes is for your email to be on a list somewhere, whether it’s a facebook contact list or some hacked database.

So what’s the point of a spoofing attack? What are they trying to accomplish?

No one is going to open an email from Russianhacker@scam.ru, but they might open one from Roderick Femm, Esq. Especially people who know you.

Hiding who it really came from, but using a verifiable email address.

I’m surprised you haven’t encountered this before, this method has been used since the 90s.