Security & Privacy

Remove the Copilot AI button and app from Windows 11 using Microsoft's official TurnOffWindowsCopilot policy.

Create an outbound Windows Firewall rule that cuts a program off from the network.

Stop Start menu searches from sending your queries to Bing and showing web results.

Let Debian/Ubuntu install security patches on its own with unattended-upgrades.

List surrounding Wi-Fi networks with signal, channel, and encryption type using the hidden airport scan command.

The standard passwd command — no sudo needed for your own account.

Use Set-MpPreference to enable controlled folder access so only trusted apps can modify your documents.

The classic user32.dll,LockWorkStation rundll32 trick locks Windows instantly — no GUI needed.

Load your passphrase-protected SSH key into the agent so git push and ssh connect without re-typing the passphrase.

Every ISO download page publishes a SHA-256 sum — this is the two-step command that actually checks it, plus the batch mode people forget.

Verify which key is which by its short SHA256 fingerprint before adding it to servers or services.

Look up passwords Safari saved for websites using security find-internet-password.