Security cheat sheets

Security cheat sheets on Sefism, written by Tauseef Fayyaz: every concept in plain words, why it is used and the pitfall that catches people out.

76 sheets
5120 concepts

Free to learn. Credits keep it fair.

Reading is free. Adding a roadmap, keeping a cheat sheet or asking Tauseef a question uses credits, which only make sure the platform goes to people who are actually learning.

15creditswhen you join
1stroadmapfree to add
Morecreditson request, as you learn

Specialise

Go deep in one area of engineering.

Cheat sheet · Specialise
Cybersecurity cheat sheet
Defend systems, test them, secure code.
Chapters
1. 1Security foundations
2. 2A safe home lab
3. Certifications
+ 2 more
- 8 chapters
- 62 concepts
Opens with credits
Cheat sheet · Specialise
Network engineering cheat sheet
Routing, switching, CCNA, cloud networks.
Chapters
1. 1Models, addressing and subnetting
2. 2Switching and VLANs
3. Routing: static, OSPF and BGP
+ 7 more
- 10 chapters
- 72 concepts
Opens with credits
Cheat sheet · Specialise
AI security cheat sheet
Secure LLM apps and agents, test models safely.
Chapters
1. 1Security foundations for AI work
2. 2How LLM apps and agents break
3. Risk maps: OWASP, ATLAS, NIST, SAIF
+ 6 more
- 9 chapters
- 78 concepts
Opens with credits
Cheat sheet · Specialise
AI governance cheat sheet
Inventory, oversight, EU AI Act, ISO 42001.
Chapters
1. 1Regulations and frameworks
2. 2AI inventory and ownership
3. Data foundation
+ 4 more
- 7 chapters
- 63 concepts
Opens with credits

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