Seems this moron is getting around. I just googled "HACKED BY PrO SpY" and several URLs spring up.

I tried a database search the same way you did and got the same "matches" but when I searched for it as "exact phrase", nothing showed up. I also tried a search by the email address alone, and still nothing. Try a more specific search in your data base, such as just one of the words (like the email address) or by exact phrase.

Seems this person targeted mostly blogs.