// Comparison

Designing Secure Software vs Incident Response and Computer Forensics: Which Should You Read?

Two cybersecurity books on Defensive, compared honestly: who each is for, what each does best, and which to read first.

Intermediate

5/52021

A Guide for Developers

Loren Kohnfelder

Loren Kohnfelder, the original PKI author, on how to weave security thinking through requirements, design, implementation and operations rather than bolt it on at the end.

Intermediate

4/52014

Incident Response and Computer Forensics

Jason T. Luttgens, Matthew Pepe, Kevin Mandia

Luttgens, Pepe, and Mandia's working playbook for running an enterprise IR engagement: pre-engagement readiness, evidence acquisition, network and host forensics, and the project-management discipline that separates a controlled response from a panic.

Read this if

Senior developers and architects who already write code well and now want to design systems that don't ship CVEs. Kohnfelder is the author who literally wrote the X.509 paper; the book is a career's worth of design wisdom in 312 pages.

Junior-to-senior incident responders, SOC leads, and CISOs who need the canonical cross-discipline reference for what a real IR program looks like end to end. Strongest as a structural primer — the maturity model implicit in the book is still the field's de facto baseline.

Skip this if

Beginners or readers wanting hands-on tooling. The book is design-level: principles, patterns, and case studies. Pair with implementation-level books for the line-of-code view.

Readers wanting current tradecraft on identity-attack response (AAD, OAuth abuse, golden SAML), cloud-IR specifically, or modern EDR-driven hunting; the book is largely on-prem 2014. Pair with cloud-IR-specific resources (Mandiant blog, AWS / Azure incident-response runbooks) for the missing layer.

Key takeaways

Secure-by-design is mostly avoided pitfalls; the book's enumeration of common-but-fatal mistakes is the cleanest mental checklist a designer can carry.
Trust boundaries are the single most useful concept in secure design; the book teaches you to see them in any architecture.
Most security debates inside engineering organizations resolve to a handful of repeated trade-offs (defense in depth vs. simplicity, blocking vs. logging, fail-open vs. fail-closed); the book names them and provides the language for the conversation.

Readiness is the engagement: most of what determines the outcome of an IR is decided before the call comes in.
The acquire-then-analyze discipline still holds; cutting that corner is what produces the bad-headline retrospectives.
The book's project-management chapters are the underrated half — most failed responses are management failures, not technical ones.

How they compare

We rate Designing Secure Software higher (5/5 against 4/5 for Incident Response and Computer Forensics). For most readers, that means Designing Secure Software is the primary pick and Incident Response and Computer Forensics is a useful follow-up.

Both books target intermediate-level readers, so the choice is about topic, not difficulty.

Designing Secure Software and Incident Response and Computer Forensics both cover Defensive, so reading them in sequence reinforces the same material from different angles.

Keep reading

Designing Secure Software

→ Alternatives to Designing Secure Software → What to read after Designing Secure Software