Windsurf is safe to use, but code written with its Cascade agent carries the same generated-code risks as any AI tool, plus a few specific to an agentic desktop IDE. Secrets can be hardcoded into source, and they can also leak through prompts, MCP server calls, and commands the agent runs. The generated code itself tends to repeat the usual insecure patterns unless you guide it.
The risks that actually matter
Hardcoded secrets in generated code
Cascade inlines keys to make integrations run, and those values reach the repo.
Secret leakage through agent workflows
As an agentic IDE, Windsurf can carry data out through prompts, auto-invoked MCP servers, and unvalidated commands, paths a browser or linter never sees.
Repeated insecure patterns
Generated code commonly includes string-concatenated SQL, missing input validation, and broken authorization on new routes unless you prompt for security.
How to secure a Windsurf app
- Keep secrets in environment variables, out of files the agent indexes or prompts against.
- Be deliberate about which MCP servers Cascade can auto-invoke.
- Review generated routes for authorization and input validation.
- Add a gitleaks pre-commit hook so a hardcoded key fails the commit.