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Security Best Practices in Go That actually matter
Real threats, overlooked risks, and what actually keeps Go services secure
Most Go security advice you will see on the internet reads like a checklist: “validate input, use HTTPS, update dependencies.” Well, it’s not wrong, but it doesn’t tell you where services actually get breached.
Go removes entire bug classes for you: no buffer overflows in safe code, no use-after-free, and a solid standard library.
What’s left are the logic-level and operational mistakes. This article covers the ones I see repeatedly in production services, with code you can drop in.
1. Your dependencies are your biggest attack surface
Your code is only a small fraction of what runs in production. Most real-world Go vulnerabilities arrive through modules and the standard library itself.
Go ships a tool that checks whether you actually call a vulnerable function, not just whether you import the module:
go install golang.org/x/vuln/cmd/govulncheck@latest
govulncheck ./...Run it in CI and fail the build on findings. Because it does call-graph analysis, the noise is low, so there’s no excuse to skip it.
