Dina Lohan is so scared of ex-husband Michael, she’s hired extra protection to be at her home at all times.

She tells TMZ:

The D.A. (District Attorney) and the law enforcement are watching his (Michael) every action, and the family court, because he is also six months arrears in child support, which is through the support collection unit in New York. They’ve already taken his license, they’re going to take his passport. The noose is getting tighter with law enforcement and we just have to keep his feet to the fire. Lindsay’s lawyer, Shawn Chapman Holley, is obviously talking to the D.A. there and I speak with her on a regular basis.

Dina continues:

We’re scared. I have security in my house. Actually, I’ve had security living in my house (since) he was first incarcerated for a year – armed people in my home because we were so frightened. He’s dangerous and the scary part is, when this all unravels and his little plan doesn’t work, we’re afraid he’s going to spiral out of control, which he obviously already is.

The problem isn’t even just with Lindsay anymore:

He has no visitation (with any of his children). My daughter Aliana’s phone was just blocked because he was threatening her on her cell phone. My son’s up in college – he actually gave the tabloids my son’s phone number at school, which is ridiculous. And my little guy is just 13 and he has to go to school every day and hear this.

Michael has been in prison three times, the most recent after violating an order of protection banning him from seeing his three children.