Steve BellovinI gave a retirement/farewell talk today. Video at https://www.cs.columbia.edu/~smb/talks/farewell.mp4; slides at https://www.cs.columbia.edu/~smb/talks/farewell.pdf.
XenoPhage 
@SteveBellovin Congrats, sir! May you enjoy your retirement and never grow bored. (unless you want to, of course)