A hacker who boasted that he was responsible for stealing and posting provocative pictures stolen from Miley Cyrus’ Gmail account pleaded guilty on Monday to other charges involving credit card fraud and hacking.

Josh Holly, 21, pleaded guilty to possessing about 200 stolen credit card numbers, and to breaching celebrity MySpace pages in a spamming scheme that earned him at least $100,000.

Holly has never been charged with hacking Cyrus’s e-mail account, but after bragging online about this and other activity, and taunting authorities that they would never find him, his apartment in M...