Backup data - ensure that you take regular backups of important data - if your computer does get compromised you can restore this.
Scams and Phishing - be wary of the latest scams and phishing techniques. Use caution when you receive phone calls, emails or text messages that request your personal or security details. You should never give them passwords or remote access to your computer. Protect your financial identity for more info.
Emails - do not open suspicious emails from unknown sources. Keep up to date with the latest scams. Visit Scam Watch for more info.
Bookmark important sites - like your bank and shopping sites, rather than typing in the url each time. Miss-spelling can take you somewhere nasty.
Downloads - when downloading free software always be extremely cautious of what you agree to install. Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never intended to download and install in the first place. Several PUPs (Potentially Unwanted Programs) are installed in this way and some can have malicious traits.