Prince Harry’s phone was hacked by journalists and private investigators working for the Daily Mirror who invaded his privacy by snooping on him unlawfully, a judge ruled Friday, delivering an historic victory for the estranged royal who broke from family tradition to take on the British press.

Phone hacking was “widespread and habitual” at Mirror Group Newspapers, and executives at the papers covered it up, Justice Timothy Fancourt said in his 386-page ruling handed down in the High Court.

The newspapers were ordered to pay the Duke of Sussex 140,000 pounds ($180,000) for using unlawful information gathering in 15 of the 33 newspaper articles examined at trial.

Harry said the ruling was “vindicating and affirming” and should serve as a warning to other news media that used similar practices, an overt reference to two tabloid publishers that face upcoming trials in lawsuits that make nearly identical allegations.

“Today is a great day for truth, as well as accountability,” Harry said in a statement read by his lawyer outside court. “I’ve been told that slaying dragons will get you burned. But in light of today’s victory and the importance of doing what is needed for a free and honest press, it is a worthwhile price to pay. The mission continues.”

Fancourt awarded the duke damages for the distress he suffered and a further sum to “reflect the particular hurt and sense of outrage” because two directors at Trinity Mirror knew about the activity and didn’t stop it.

“They turned a blind eye to what was going on and positively concealed it,” Fancourt said. “Had the illegal conduct been stopped, the misuse of the duke’s private information would have ended much sooner.”

Harry, 39, the alienated younger son of King Charles III, had sought 440,000 pounds ($560,000) as part of a crusade against the British media that bucked his family’s longstanding aversion to litigation and made him the first senior member of the royal family to testify in court in over a century.

His appearance in the witness box over two days in June created a spectacle as he lobbed allegations that Mirror Group had employed journalists who eavesdropped on voicemails and hired private investigators to use deception and unlawful means to learn about him, other family members and associates.