Prosecuted for leaking classified material. That being the memos. Comey is in big legal trouble.
Comey never described the memos as classified in his written testimony or in his answers to senators questions on Thursday. At one point in his written statement, he explicitly said he immediately prepared an unclassified memo of the conversation about Flynn. He also did not correct senators who referred to the memos as unclassified multiple times throughout the hearing, despite taking pains to avoid discussing potentially classified matters at other times.