So, the single most important step to securing your computer is making sure you always have backups. Do not jsut take it for granted they need to be tested and off site also encrypted as backups depending how set up can be hit ransom ware attacks.
Keep your software (Windows/Mac, Office, Adobe) updated
Without up-to-date software, the average unprotected computer connected to the Internet can be compromised in less than a minute.
Use updated anti-virus security software
Don't download software from any website you don't fully trust
Use Two-Factor or Multi-Factor Authentication.
Never respond to SPAM or phishing emails
Encrypt confidential data
Keep your password secure - if in doubt, change it!
Keep your laptop and mobile devices physically secure
Take regular backups of your data and keep these secure
Be careful what you click
Use Nord vpn password manager, link in dropdown click here