Lion Cipher Lab
A guided tour of the OWASP Top 10
- AppSec / DevSecOps
- Beginner
- ~45 min
- Free · no account required
Why it matters
The OWASP Top 10 is a standard awareness document that represents a broad consensus about the most critical security risks to web applications, and it's the shared language the whole industry uses to talk about web weaknesses. Once you know the ten categories, the rest of the appsec track stops looking like a random pile of tricks and starts looking like a map: nearly every hands-on room you'll meet is really one of these ten ideas in a specific costume. Learning the map first means every later lab has a place to hang — you'll know what family a bug belongs to, why defenders care, and how it…
What you'll learn
- reading the OWASP Top 10 as a map
- naming the ten major web risk categories
- explaining each risk in plain language
- recognizing which category a weakness belongs to
- translating between the 2021 and 2025 numbering
- connecting risk categories to a real app you own
Steps in this lab
- What the OWASP Top 10 actually is
- A01: Broken Access Control
- A02: Security Misconfiguration
- A03: Software Supply Chain Failures
- A04: Cryptographic Failures
- A05: Injection
- A06: Insecure Design
- A07: Authentication Failures
- A08 and A09: Integrity, and seeing attacks at all
- A10: Mishandling of Exceptional Conditions
- Reading the 2021 numbering, which you will still meet everywhere
- You now have the map