On Nov 9, 2004, at 12:05 PM, S. Blake smelled something: > Something fishy is going on here, but I don't know what. This > "sender" copied my e-mail address. I have also gotten a bounce-back > that I was supposed to have sent to someone in my address book-- but > with the prefix 3D.
You can probably thank one of your Windows-using friends for this. There are several worms and viruses on Windows that search the infected machine for e-mail addresses. When it finds your address, it sends out an infected e-mail that looks like it came from you. There are also spammers who use this technique. This is why some of us champion digitally signed mail. If everyone signed their mail, this type of spoofing would go away because we could just throw away mail that wasn't signed. The spoofing program cannot duplicate your signature. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 2363 bytes Desc: not available Url : http://www.math.louisville.edu/pipermail/macgroup/attachments/20041109/06cdc5d3/attachment.bin
