An April attack against Iranian banks allegedly netted roughly three million debit account numbers and PIN numbers that were then posted to the Internet. The exploit was attributed by some to be an act of political hacktivism. The incident was believed to be the act of a hacker who had apparently warned authorities about the vulnerability, which became clear to him while working in a network operations role. When the exposure was not taken seriously, the individual apparently decided to reinforce his claim by accessing the account numbers and posting them, himself.