ECS 235B, Winter 2026: Foundations of Computer and Information Security

Announcements

Changing Office Hours Today — None today, moved to 4pm tomorrow (May 12 8:54am)
Office hours on Thursday April 30 and Friday May 1 (Apr 30 10:22am)
Extra Credit #2 Due Date (Apr 27 1:05pm)
No Office Hours Today; Homework #2 Due Date Extended (Apr 24 10:25am)
Homework 2 (Apr 22 2:05pm)
Office Hours and Such (Apr 9 4:27pm)

Class Information

Homework and Extra Credit

Homework #1 (due Apr 10)
Homework #2 (due Apr 28 — Note extension from Apr 24)
Homework #3 (due May 13 — Note extension from May 11))
Homework #4 (due May 29)

Project

Project Selection (due Apr 17)
Project Progress Report (due May 11)
Completed Project (due June 8, 5:30pm)

Handouts

Papers are on Canvas for copyright reasons
Example Homework Answer
Bell-LaPadula Symbols
Table of Notation for Noninterference and Nondeducibility

Lecture Outlines

Lecture # 1 [slides] (Mar 30)
Lecture # 2 [slides] (Apr 1)
Lecture # 3 [slides] (Apr 3)
Lecture # 4 [slides] (Apr 6)
Lecture # 5 [slides] (Apr 8)
Lecture # 6 [slides] (Apr 10)
Lecture # 7 [slides] (Apr 13)
Lecture # 8 [slides] (Apr 15)
Lecture # 9 [slides] (Apr 17)
Lecture #10 [slides] (Apr 20)
Lecture #11 [slides] (Apr 22)
Lecture #12 [slides] (Apr 24)
Lecture #13 [slides] (Apr 27)
Lecture #14 [slides] (Apr 29)
Lecture #15 [slides] (May 1)
Lecture #16 [slides] (May 4)
Lecture #17 [slides] (May 6)
No class (May 8)
Lecture #18 [slides] (May 11)
Lecture #19 [slides] (May 13)
Lecture #20 [slides] (May 15)
Lecture #21 [slides] (May 18)
Lecture #22 [slides] (May 20)