Hilary Duff's home once again attracted an unwanted visitor ... but luckily she and her BF were home to scare his **** away.
Law enforcement sources tell TMZ ... Hilary and her baby daddy -- music producer Matthew Koma -- were home Tuesday night in the kitchen of her Beverly Hills home when, at around 8:30, they noticed a man lurking around their backyard.
Hilary - Matthew - Intruder - Police - Cops
It's unclear exactly how but we're told Hilary and Matthew managed to scare away the intruder before calling police. Cops showed up and, while doing a perimeter search, they noticed a window screen...