LeBron James has beefed up security at his L.A. home in a major way -- bringing a team of armed guards to patrol his house after learning he was targeted by a team of burglars.
As we previously reported ... the LAPD arrested 4 people who had hit more than 24 homes of the rich and famous, including Yasiel Puig, Rihanna, Christina Milian and others.
Cops say the bad guys had a list of 12 more celebrity targets -- including LeBron, Matt Damon and Viola Davis.