Anthropic’s CISO kicked things off by admitting that Claude handles roughly 90 percent of their internal code generation. He didn’t stop at the brag—he walked through the safeguards they’ve layered around that AI output to keep trade secrets and credentials under lock and key. First, they strip out any hard-coded secrets before Claude ever sees a prompt. Every API key or database password lives in a centralized secrets manager, never in plaintext code. If Claude needs to inject credentials into boilerplate, it references placeholders that only get replaced at deploy time. On top of that, they log every model interaction and revoke tokens the moment they detect unusual patterns. He then highlighted why your local .env file is the weakest link. It sits in plain sight, often checked into Git or copied around by junior devs, and gives attackers a one-stop shop for your entire workflow. Instead, he recommends vaulting environment variables, using short-lived tokens and rotating them automatically. Finally, he pointed readers to a full security config in the thread—everything from zero-trust network segmentation to automated prompt redaction.