These should be reported to Proz via support ticket so that the account can be removed. I get one about once a year. You really have to wonder about the depravity and/or intelligence of some of these scammers. He specifically found me by entering English-English language combo based in Germany, which is pretty odd in itself, assuming he is not actually a translator. This factoid shows up on the "Visitors" tab of your profile, in case you care.
That's how he found me, too: [Search: From: English, To: English, Country: Germany]
I submitted a support ticket immediately, and have meanwhile received confirmation from proz.com staff that the account has been removed.