I don't know about surveillance. He was speaking on authentication and
security.
In the mid-1970's while he was developing the regular--later to be public
internet, he was also working with the NSA developing a secure internet using
classified encryption methods.
While his colleagues at the time, Diffie–Hellman, had come up with the
concept of key exchanges, they had no algorithms and he couldn't say anything
to them. He was schizophrenic (his word) in that he wanted to add his view
but couldn't.
What he was saying in the video, was that looking back, he would have liked
to include better authentication and encryption in the regular internet.
It was an interesting video. He's done many others as well.
