How not to lose money from your wallet and not be deceived by thieves?

[Alex_nutis]

I write this post, because my friend stole $ 5000 from his wallet. I'm worried about frequent thefts.
The issue of security was discussed a million times. It's about using the wallet correctly.
Beginners and seasoned people remember these rules.

1. Ideally, use a separate device only for wallets and exchanges and for no other reason
2. Keep passwords and access keys on the UBS and not transfer it to anyone. Make a few copies.
3. Do not show your monitor screen to anyone.
4. Open wallets and exchanges only through a link that was previously saved, otherwise there is a chance to get into phishing.
5. Do not open links from e-mail.
6. Always install 2FA and pass verification
7. Use several wallets, diversify risks

And the main thing: Do not be lazy to do all this, otherwise it will be painful for the lost money.
Good luck!