The 15-year-old's parents - David and Victoria Beckham - have hired special protection for their son when he plays football for Arsenal's youth team and the guard, an ex-special forces soldier, goes to great lengths to remain undercover.
A source close to the football club revealed: "The bodyguard puts on a Gunners tracksuit and sits on the bench like he is part of the coaching staff.
"Because of how big a star David is, the family decided to take the step to hike up his safety.
"Arsenal were more than happy to do what is necessary to ensure safety for all their young players."
The club has also increased its own safety patrols at both their training base and the Hale End youth academy in Walthamstow, east London as well as cracking down on who watches the matches, limiting it to parents and invited guests.
A source shared: "Whereas before supporters could walk up and watch the games without any problems, the matches are now 'behind closed doors' with restrictions in place as to who can and can't attend.
"It's a no-brainer to tighten security when you have such a big name at games.
"Brooklyn is one for the future and, because of his family, he attracts loads of attention."
However, the decision to limit visitors is not just for the safety of Brooklyn but also for his father, 39, who attends "most" games.
The source continued to the Daily Star on Sunday newspaper: "David is at most matches and he is a global superstar, so you can see why the decision was an easy one to make.
"Brooklyn is a big name and he's going to be a huge star. He's already used to having lots of attention so he is taking it in his stride. He's doing really well."