COMS W4181: Security 1 (Fall 2022)

Lecture Details

Instructor: Suman Jana
Office: Mudd 412
Office hours: Wednesday (2:30-3:30pm) DSI 412
TA Office hours: Samanway (Wednesday 10am-12pm), Ben (Monday 3-5 pm)
Classroom: CSB 451
Class hours: Monday and Wednesday (1:10-2:25 pm)


This class will teach you different fundamental aspects of computer security including basics of cryptography, network security, host security, software and hardware security. The goal of this class is to explore different security problems that affect real-world systems and different techniques that can prevent/mitigate such issues.

Note:There will be no assigned textbook for the class and you are expected to read the assigned articles/papers/slides carefully.

Late policy: You have 2 late days in total that you can use on your 2 homework assignments as you please.


COMS W3157 Advanced programming. In general, you should be generally comfortable to deal with complex large source code (> 1000 lines of C/C++ code) and have basic knowledge of testing/debugging tools like gdb, gcov, etc.


Books (optional): Network Security: Private Communication in a Public World, Thinking Security: Stopping Next Year's Hackers.


Date Topics Lecture slides & Reading
Sep 7 Introduction & Threat models intro.pptx, intro.pdf
Sep 12 Crypto I - basics, ciphers crypto.ppt, crypto.pdf, optional reading: Network Security: Private Communication in a Public World 2nd ed. by Kaufman et al. (Chapters 5.1-2, 5.6-7, 2.1-6, 4.2, and 6.1-6)
Sep 14 Crypto II - public key, hash functions
Sep 19 Crypto (cntd.)
Sep 21 Crypto (cntd.)
Sep 26 Crypto (cntd.)
Sept 28 Crypto (cntd.)
Oct 3 Network Security: SSL/TLS, HTTPS ssl.ppt, ssl.pdf
Oct 5 Network Security: SSL/TLS, HTTPS (cntd.)
Oct 10 Midterm review+Network Security: SSL/TLS, HTTPS (cntd.)
Oct 12 Midterm
Oct 17 Web Security web_sec.pptx, web_sec.pdf
Oct 19 Web Security (cntd.)
Oct 24 Network security: TCP/IP, DNS, BGP tcp-dns.pptx, tcp-dns.pdf
Oct 26 Network security: TCP/IP, DNS, BGP tcp-dns.pptx, tcp-dns.pdf
Oct 31 Class canceled (Suman is traveling)
Nov 2 Network defense: Firewalls, VPNs, and Intrusion Detection network-defense.pptx, network-defense.pdf
Nov 7 Acedemic holiday
Nov 9 Network defense (cntd.)
Nov 14 Denial of service attacks dos.pptx, dos.pdf
Nov 16 Denial of service attacks (cntd.)
Nov 21 Memory corruption & defenses memory_attacks.pptx, memory_attacks.pdf
Nov 23 Academic holiday
Nov 28 Memory corruption & defenses
Nov 30 Sandboxing & Isolation isolation.pptx, isolation.pdf
Dec 5 Principle of least privilege/Access control principles.pptx, principles.pdf
Dec 7 Class canceled (Suman is traveling)
Dec 12 Final