In his memoir 'Spare', Harry writes that he spoke to William about individuals who were plotting against his wife, Meghan Markle.
Harry reveals that he informed his brother about a past staff member who was sabotaging Meghan and also about a current staff member who was taking payments to leak private information to the press about him and Meghan.
Harry was grateful that William listened to him and did not lecture him about his actions.
William was subdued and showed interest in what Harry had to say. Harry and William agreed to keep talking about the matter and investigate further.
Harry's sources for the information he shared were reliable, including journalists and barristers, and he even made a visit to New Scotland Yard. William and Kate had their own suspicions and agreed to look into it.