内容摘要：He said they're appealing to people to stop inserting the coins before more damage is done to these 60-million-year-old rocks.

He said they're appealing to people to stop inserting the coins before more damage is done to these 60-million-year-old rocks.

Companies that offer the so-called Red Team service have to assemble staff with very particular skills.Often using former military and intelligence personnel, Red Teams are asked one question.

“How can you break into this top-secret project?”Leonardo, the giant defence company, offers such a service.It says hostile states seeking disruption and chaos are a real threat and sells its Red Team capability to government, critical infrastructure, and defence sector clients.

Other companies offer Red Team services, but there are not many in the business as the specialist skills needed are rare.Firms offering such services like to keep a low profile and are usually extremely reluctant to talk to the press.

However, Leonardo's Red Team agreed to speak to the BBC under pseudonyms.

Greg, the team leader, served in the engineering and intelligence arms of the British Army, studying the digital capabilities of potential enemies.are interested in signing

18-year-old Brazil forward Endrick on loan.manager Massimiliano Allegri is set for a return to

as manager. The 57-year-old spent four years at the San Siro between 2010 and 2014.19-year-old Spanish forward Marc Guiu a loan deal in the Championship next season.