Britney Spears has accused her ex-bodyguard of hacking into her iCloud account.

The 44-year-old star's attorney has reportedly sent a cease and desist letter to security guard Thomas Bunbury, alleging that he accessed her personal devices and iCloud without her content or authorisation.

According to TMZ, the Toxic hitmaker is threatening to report Bunbury to the authorities and pursue charges for allegedly violating state and federal laws.

It's said in the cease-and-desist sent last month, she has called on him to delete any copies he may have made, as well as wanting to know if he shared any files or photos.

She has claimed she was locked out of her accounts a number of times.

Sources told the outlet that the bodyguard was fired over the summer for allegedly breaching his NDA after communications with media and fans.

It's reported that Bunbury was fired before the alleged hacking.

News of the cease-and-desist comes as Britney is set to appear in court on May 4 following her DUI arrest earlier this month.

She was arrested on suspicion of driving under the influence of drugs and alcohol (DUI) in Ventura, California.

It's claimed she was "driving erratically" before an hour‑long police pursuit that ended with the singer being taken into custody on suspicion of DUI.

A 911 caller reportedly described her as "all over the road," prompting officers to track her vehicle until she eventually stopped.

Police sources said Britney appeared "disoriented" when approached, and she was later booked before being released.

The incident has sparked renewed concern among fans, especially as Britney - who has struggled with her mental health and was freed from the constraints of a lengthy conservatorship in 2021 - has been largely out of the public eye in recent months.

Her ex-husband Sam Asghari - who started dating her in 2016, got married in June 2022 and split 13 months later before getting divorced the following year - has called for privacy for the pop star.

He told Fox News: "When it comes to people making mistakes, I understand that. I think that everyone deserves privacy. And I hope the press has learned from the past, that they give her the privacy that she needs."