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You are looking at Spring 2026. That term is over, so these are last term's numbers rather than seats you can take. dibs holds 21 sections for Spring 2026, read 27 days ago. Separately, it has finished 15 of the 3,572 courses on its current checking list for this term. Future-term coverage is incomplete, so a course with nothing here may simply not have been reached yet. Back to Fall 2026

COM SCI M138

Computer System Security

4 units

Sections & times

Also listed as EC ENGR M117: the same class, and each department holds its own seats and its own grade history.

Grades

No grade history for this course: the data runs Fall 2021 to Fall 2025. Sections for Spring 2026 are below. The same class is graded under EC ENGR M117, where the history is kept.

Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.

Reviews for COM SCI M138

Workload and assignments

Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.

dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.

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What comes first

The chain dibs can see is 3 courses long before COM SCI M138. Read from Fall 2026, because dibs has not read a class page for COM SCI M138 in Spring 2026 and a department can change what it requires. dibs has read a class page for every course in it.

Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.

From the registrar's catalog

(Same as Electrical and Computer Engineering M117.) Lecture, four hours; laboratory, one hour; outside study, seven hours. Requisite: course 33. Recommended requisite: course 111. Introduction to fundamental knowledge of computer system security. Students gain understanding of exploit techniques; learn to use the security tools; learn to design and implement secure systems; and learn concepts of computer security including software vulnerability analysis and defense, web security, mobile security, and network security. Covers the latest security topics in practice (e.g., cryptocurrency), and in research (e.g., state-of-the-art fuzzing techniques and machine-learning-based security analysis). Students get hands-on experience in analyzing and designing secure systems. Includes course project for cutting-edge security research. Letter grading.

Sections in Spring 2026

dibs has not read Spring 2026 for this course, so it cannot say whether it runs. dibs reads the term you are enrolling in first and the rest a little at a time; the registrar's own listing is the answer until this one catches up.

From the people who took it

Student reviews

What taking COM SCI M138 was like: the work, the teaching, and what students wish they’d known.

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