Jennifer Arcuri’s laptop containing personal details from her time with Boris Johnson has been stolen.
The American former model’s computer was snatched in Britain in the past 10 days.
And the former model, who allegedly told friends she had an affair with the PM, is terrified the information will be leaked.
It is said to contain personal information including pictures, emails and calendar dates from when she was close to Mr Johnson, who was London Mayor at the time.
One friend of the 34-year-old said: “Jennifer is extremely agitated and upset.
"Her laptop contains so much personal information covering the time she knew Boris.
"She is racking her brains as to what it may hold.
"There are pictures, emails and documents on the laptop which she is terrified could be hawked around if someone gains access to it."
Friends of Ms Arcuri claim she and Mr Johnson enjoyed a sexual tension that ultimately led to an affair.
The police watchdog has been asked to look into claims the PM gave the tech businesswoman favourable treatment when he was Mayor.
The pair deny any wrongdoing.
Mr Johnson came under more pressure at the weekend when journalist Charlotte Edwardes claimed he groped her and another woman at a lunch in 1999, when he was Spectator editor.
The wife of the PM’s chief aide Dominic Cummings denied claims she was the second woman.
Mary Wakefield said: “Nothing like this ever happened to me.
Nor has Charlotte ever discussed the incident with me.”
Mr Johnson, who was Mayor from 2008 to 2016, yesterday denied any impropriety.
