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Developer Tools

Is your dev server listening on all network interfaces?

A dev server bound to 0.0.0.0 is reachable by everyone on your network. How to check the bind address, and why allowedHosts and cors settings matter.

Oct 19, 20263 min read
Developer Tools

Is TypeScript strict mode a security setting?

TypeScript strict mode is not a security control, but nine of its checks remove common bug classes in Node services. Which flags it turns on and why.

Oct 19, 20264 min read
Developer Tools

Is Spring Boot DevTools safe to leave in a production build?

DevTools disables itself for fully packaged apps, but forcing it on is a security risk. Keep it out of the artifact with optional or developmentOnly.

Oct 19, 20263 min read
Developer Tools

Is opening a Jupyter notebook from the internet safe?

Viewing a notebook is designed to be safe, but running its cells is not. How Jupyter trust works and a safe routine for notebooks you did not write.

Oct 19, 20263 min read
Developer Tools

Is MDX content code? Reviewing blog pull requests safely

MDX lets Markdown import and run JavaScript at build time. Treat content pull requests as code: review them, scan them and limit who can merge to main.

Oct 19, 20264 min read
Developer Tools

Is last pulled time a safe signal for deleting old images?

Last pulled time helps find unused images, but it misses rare restarts and digest pulls. ECR uses it only to archive, then expire after a delay.

Oct 19, 20263 min read
Developer Tools

Is it the package registry or your CI network? A ten minute triage

When installs fail in CI, check three things in ten minutes: the status page, a request from outside your network, and the exact error. Steps and commands.

Oct 19, 20264 min read
Developer Tools

Is it safe to store iOS signing certificates in a git repo?

Git storage for iOS certificates and profiles can be reasonable if the repo is private, encrypted and tightly scoped. What it does and does not protect.

Oct 19, 20264 min read
Developer Tools

Is Docker config.json encrypted? What base64 registry logins mean

Without a credential store, docker login saves registry credentials in config.json as base64, which is encoding, not encryption. Here is how to fix it.

Oct 19, 20264 min read

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