From 2014:

Police arrested a Seattle man at Bill Gates and Melinda Gates' mansion for allegedly collecting more than 6,000 child rape photos.

Rick Allen Jones, reportedly employed as an engineer at the Gates’ home, is also accused of trading pornography images via Gmail.

He is charged with possession of child pornography.

https://www.kiro7.com/news/man-arrested-bill-gates-estate-reportedly-trading-/43531857/