smurf account

noun2

1. •
   (Internet) An alternative computer account used by a known or experienced user in order to deceptively self-present as someone naïve or less experienced.

   • This policy has dramatically reduced the problems with smurf accounts, spam, flaming, and various types of bad behaviour on the forums. — 2002
2. •
   (slang) A bank account of many intended to handle illicit money in amounts too small to raise suspicion.

   • They were smurf accounts and other people and companies contracted by me. I never used my name. — 1997