Yes, I met and worked with Robert T. Morris in the late 1980's.
During 1986 and 1987, I had tracked a computer intruder from our systems in Berkeley California, through a complex trail, into Hannover, Germany. Using a honeypot, we were able to show the involvement of the E. German Stassi and a rather mysterious Bulgarian connection. I testified at the intruders' trial in Germany.
As the investigation wound up, I visited the National Computer Security Center (a part of the NSA), and met Robert T. Morris. Of course, I'd known him from his Unix/Bell Labs days. With a cigarette in his hand, we talked extensively about password security and the need to go beyond simple encryption of the Unix etc/passwd file. (At this time, salts & rainbow files were in the experimental stage). He was convinced that encryption was needed for many more processes than just logging into a system.
Later, Bob Morris encouraged me to write up my experiences in a paper, "Stalking the Wily Hacker", which was published in the April 1988 CACM.
Robert T. Morris was one of the computer pioneers who foresaw the troubles of unsecured computers and networks. He recognized that it wasn't possible to simply isolate a computer from the network -- that a computer's power was multiplied when connected to others. And his work in applying cryptographic protection to data foreshadowed much of today's efforts in computer security.
All of us owe Robert T. Morris a debt: our systems and networks work better and more securely because of his work.
May he rest in peace.
-Cliff