Never Store Private Keys Digitally in Plaintext

Most digital storage (like a .txt or .doc file) is vulnerable to malware, cloud sync hacks, and accidental sharing.

How to Store Private Keys Physically:

• Good: Write it down by hand on acid-free paper using a permanent pen
• Better: Stamp it by hand into metal plates
• Make copies and store in different - secure - physical locations
• Make split copies - Physical Cold Storage
• Avoid:
  • Taking photos or screenshots
  • Printing from a Wi-Fi-enabled printer

If You Must Store Digitally:

• Use KeePassXC
• Use password manager
• Never use plugins or browser extensions with anything security related

Never enter private keys on unknown or untrusted websites. Check:

• Is the site HTTPS encrypted?
• Is the domain exactly correct? (Beware phishing lookalikes)
• Do you trust the site's developers?
• Consider using read-only wallets (watch-only) for tracking instead of exposing your key