I tried to find how Robert Morris was indicted, but the only source I could find on the whole internet appears to be https://www.kaspersky.com/blog/morris-worm-turns-25/3065/ pointing at his father (NSA cryptographer) convincing him to confess. Why did he tell his father in the first place? Cliff Stoll book suggests Robert Morris senior knew who was responsible in less than 12 hours after virus was released. Did his father (NSA) mediate between his son and NSA/FBI/Police?