Fix GitHub Copilot Terraform Security Risks Before They Hit Prod

Originally published on kuryzhev.cloud Copilot just autocompleted your security group with port 0–65535 open to the world — and terraform validate said it was fine. That's the GitHub Copilot Terraform security problem in one sentence: the suggestions are syntactically valid, pass every local check, and still destroy your security posture on first apply. We've seen it happen across three separate teams in the last six months, and the pattern is always the same: nobody noticed until a compliance scan flagged it post-deploy. Symptoms The signs aren't loud. That's what makes this dangerous.