Gareth Crosskey was jailed for 12 months Wednesday after pleading guilty to crimes under Britain's Computer Misuse Act. His victim wasn't identified at the time, but The Sun newspaper named her as Gomez.
The tabloid said Crosskey posted the words "Justin Bieber sucks" to her Facebook page, prompting a torrent of abuse from the Canadian singer's fans. It also said Crosskey claimed to have intercepted messages between the pair.
Britain's Judicial Official on Tuesday confirmed that The Sun's story was accurate.
Gomez's U.S.-based representatives did not immediately return emails.