Lindsay Lohan is getting serious about her security she's hired an ex-Israeli Army specialist as her new henchman.

The star now has a mean guy fronting her security detail, so she can keep paparazzi at bay while she's out shopping or partying. 

And, in typical Israeli Army fashion, her new minder has no name and rarely cracks a smile.

One snapper, who has already come face to face with the bruiser, says, "This guy means business. He's deadly serious about his job. He approached me recently while I was waiting for Lindsay outside a dance studio and left me with no doubt that if I didn't move on, there would be trouble. He's the real deal."