Even if you don’t have a service call scheduled, you might be inclined to answer the door when someone in a cable company uniform comes knocking. But police in California are on the lookout for a man who allegedly posed as a Comcast employee to enter a woman’s house and sexually assault her.

CBS San Francisco reports that the attack occurred on Aug. 24 in Union City, CA, when a woman answered her door for a man — described as white, around 30 years old, between 5’9″ and 6′, 180 lbs., muscular build, with short black hair, and wearing a red Comcast shirt — claiming to be from the cable company.

He said he was making a service call, but the woman says she told him that she hadn’t requested one. She tried to shut the door to prevent the man from entering but claims he forced his way into her home and the assaulted her.

Reps for Comcast tell CBS that it employees do occasionally make unannounced service calls — after all, there might be a problem in the area that not every customer is aware of — but that these workers should always have a photo ID readily visible. Before opening the door, Comcast customers can call (800) 266-2278 to verify that the service visit is legitimate.

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