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Free AI lessons

Plain-English, sourced, a few minutes each. No email required.

• The family safe word: your defence against AI voice-clone calls
  Scammers can now copy the sound of a loved one's voice and call you asking for
• AI wrote your .env into a commit? What GitHub push protection catches, and why `.gitignore` alone won't save you
  I committed a fake API key in a .env file, then "fixed" it the way most people do: add .env to .gitignore and run git rm --cached .env. The file…
• Perfect spelling no longer means a message is safe: AI-written scam texts and emails
  The old tip is out of date. For years people were told to look for bad spelling and clumsy grammar to spot a scam. The FBI now warns that criminals…
• Three things ChatGPT's own rules tell you (that most people never read)
  Almost nobody reads the Terms of Use. Here are three plain-English takeaways from OpenAI's terms for ChatGPT. (These are the U.S. and most-countries…
• Your AI suggested `pip install` for a package that doesn't exist. Check before you install.
  A made-up but plausible package name, fastjson-schema-validator-pro-xq7, returns "No matching distribution found" from pip and E404 from npm. A real…
• The AI-written shell script that ran from the wrong folder and exited 0: `set -euo pipefail`, and where it still won't save you
  A four-line script whose cd failed (because BUILD_DIR was unset) kept going. It printed the wrong working directory, ran its "deploy" line, and…
• Before you type: who can see your AI chats, and the setting that keeps them out of training
  Treat an AI chat like a postcard, not a diary. Unless you change a setting, what you type may be used to improve the AI, and sometimes a person may…
• Is this photo real? Check its "Content Credentials" in 30 seconds
  Some photos now carry a hidden "nutrition label" called Content Credentials. It can show which app made or edited the picture, sometimes including an…
• Spot the "Made with AI" label on YouTube (and what it does not tell you)
  YouTube requires creators to tell viewers when a realistic-looking video was made or meaningfully changed with AI. That shows up as a label. Knowing…
• Run two AI coding agents at once without them overwriting each other: `git worktree`
  Two "agents" edited the same file, app.txt, at the same moment, each in its own folder on its own branch. The main checkout stayed untouched. When I…
• Which of the agent's 16 commits broke it? Let `git bisect run` find it in 4 test runs
  An agent made 16 commits, and somewhere along the way add 2 3 started returning -1. I gave git bisect one good commit, one bad commit and a 3-line…
• The AI said "curl it and run it." Verify the SHA-256 first, and know what that does and doesn't prove
  I recorded the SHA-256 checksum of an installer script, then appended one line to the file. sha256sum -c printed install.sh: FAILED and WARNING: 1…