Andy Coulson, the former editor of the News of the World newspaper, who went on to work for Prime Minister David Cameron, has been found guilty of hacking phones.
An important trial has been going on for many months, after the voicemails of top celebrities, royalty and even crime victims were hacked into.
The News of the World was shut down in 2011 after the scandal was revealed.
The prime minister has now said he's sorry for hiring Mr Coulson.
The trial was trying to find out if the people in charge of The News of The World knew that journalists were hacking into mobile phones to get juicy stories.
'Full and frank apology'
The PM said on Tuesday: "I am extremely sorry I employed him. It was the wrong decision and I am clear about that."
Before getting the job as Mr Cameron's head of communications, Mr Coulson told the PM he'd not been involved in hacking phones.
"Knowing what I know now, and knowing that those assurances weren't right, it was obviously wrong to employ him," Mr Cameron said.
One of the other major people on trial, Rebekah Brooks - who was in charge of News International, the company that made the News of the World - has been cleared of all the charges against her.