Steven M. Bellovin

Spring '23:
Fall '23:

Tuesday, 4:00-5:00
In person—wear a mask!—or via Zoom
Wednesday, 4:00-5:00
Zoom only
or by appointment. (Office hours are for walk-ins, with no appointment needed. If you have something complex you need to discuss with me, it's better to make an appointment; I have reasonable availability.)

No office hours Wednesday, April 5.

Picture of Steve Bellovin

Voice: +1 (212) 853-8427
Fax: +1 (212) 853-8440
Zoom, FaceTime, or Skype: By arrangement

454 Computer Science Building
Department of Computer Science
Columbia University
500 West 120th St, M.C. 0401
New York, NY 10027-7003


Firewalls and Internet Security, first edition Firewalls and Internet Security, second edition Thinking Security
Last updated 31 Mar 2023