I opened an e-mail which presented itself as notification of a waiting United Parcel Service delivery that had not been delivered because no one was
I got a warning from Avast!
A little later, a browser window appeared that claimed to be from Windows Defender, saying that I have a virus. The window asked for my username and password, to access a remedy for the virus (or something like that). I closed the window.
How do I fix this? (I am supposing it will bother me again.)
Malwarebytes. Or spybot.
I hope you went off line immediately. Scanned with your AV package then, as John has suggested, Spybot and MBM,
[bad img]http://www.katzy.dsl.pipex.com/Smileys/banghead.gif[/bad img]
Most, bordering on almost all, shippers/online merchants have either a free 800 number, and/or email contact form/address.
Even if you haven't opened the email (re a tracking number, etc.,), their customer service rep can check to see if they emailed you, etc., simply by looking up your name, etc.,.
I do this for ALL my Amazon.com emails since their email sends [re matters that are not order related] are indistinguishable from any run of the mill email, i. e., I've complained about this as part of my contact with their customer service rep, and have suggested repeatedly that if they have something to say to me, why not ask me to log into my account and have a look see at a customer message webpage. Even a U2U type feature would be better than a nondescript email that could have been sent by some hacker, i. e., scenarios are not limited to Amazon being hacked, but the end users email client server/address book/etc.,. No Joy re changes to their email customer contact system.