Yahoo7 has been convicted and fined $300,000 after an inexperienced journalist published a story that led to a Melbourne murder trial being aborted.
Victorian Supreme Court Justice John Dixon on Friday slammed the online company for a "serious lack of proper oversight".
The fine was intended to be a "real and financial imposition" to make it clear to Yahoo7 and other media companies that contempt of court was "intolerable".
Justice Dixon earlier found Sydney-based reporter Krystal Johnson and Yahoo7 guilty of contempt of court for publishing details about a defendant that could prejudice a jury.
Ms Johnson, who was not in court, was ordered to undertake a two-year good behaviour bond.