On This Week in Tech episode 391 the panel mentioned a security vulnerability in some internet routers having to do with UPnP (Universal Plug n Play).
To see if you are vulnerable go to the link below. If you think that this account was hacked and I am not David Morrison, then you can type grc.com into your browser and click on "Services" in the site navigation menu. Then click on Shields Up! Read the disclaimer and then click proceed.
You'll see a big button in the middle of the page that says, "GRC's Instant UPnP Exposure Test.
If you still don't trust me, then you are free to go about your business.
Reading about internet security makes me paranoid.
GRC | ShieldsUP! — Internet Vulnerability Profiling
GRC Internet Security Detection System