Defense-in-Depth Validation FAQs

Question 1

What are Environment Guards?

Accepted Answer

Environment Guards are Layer 3 validations that prevent dangerous operations (like git init or database wipes) from occurring outside of specific allowed contexts, such as temporary directories during testing.

Question 2

What is the core principle of the Defense-in-Depth skill?

Accepted Answer

The core principle is to validate data at every layer it passes through—entry, business logic, environment, and debug—to ensure that bugs become structurally impossible to reproduce.

Question 3

Which other skills does Defense-in-Depth complement?

Accepted Answer

It is designed to work alongside systematic-debugging for post-fix hardening, root-cause-tracing for identifying validation gaps, and security-check for comprehensive system audits.

Question 4

How does this differ from standard input validation?

Accepted Answer

While standard validation usually happens at the API boundary, Defense-in-Depth adds redundant checks throughout the execution flow to catch errors that might bypass initial checks due to mocks, refactoring, or different code paths.

Defense-in-Depth Validation

About

Key Features

Use Cases

Defense-in-Depth Validation

About

Key Features

Use Cases