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An attempt was allegedly made to hack secrets about new RAF stealth fighter jets - after a fake Tinder profile was set up using a serving member's details.

A spy, posing as an RAF airwoman, reportedly contacted servicemen on the popular dating app.

The sting persuaded at least one of the servicemen to reveal details about the F-35 Lightening II fighter, a Mail on Sunday investigation claims.

But the RAF insist no information was disclosed.

It was alleged by the Mail on Sunday that highly sensitive information about the new jets - each costing £92million - were given to an unknown third party, but the RAF say no secrets have been stolen.

The total bill for the jets is reportedly set to be a huge £9 billion.

(Image: Getty Images Europe)

According to the Mail, a memo from the RAF’s head of security said: "Within the last week a serving member of the RAF had their online dating profile hacked.

"It subsequently transpired that the perpetrator then attempted to befriend another serving member of the RAF to apparently elicit comment and detail on F-35.

"Fortunately, little information was disclosed and the individual whose account had been hacked reported this matter expediently enabling prompt follow-up action and investigation."

(Image: Getty Images AsiaPac) (Image: Getty Images)

According to the report, suspicions point to intelligence services in Russia or China, but it is yet unclear.

An RAF spokesperson said: “No F-35 secrets have been stolen.

"No F-35 information of a sensitive or classified nature has been disclosed via a dating site.

"The member of RAF personnel involved is not even associated with the F-35 programme.”