the more people continue to ditch windows, the more scammers are going to focus their energy on linux

Sorry, I missed this in my first reply.

It is true.

A few simple rules:

• keep your system up-to-date within the constraints of their repositories
• install only from trusted repositories, i.e. the official ones for your distro. This excludes any package of any app straight from their website.
• same precautions for web browsers as for any other OS. Don't click any old link, don't execute mail attachments, that sort of stuff.
• don't execute arbitrary code esp. from the internet
• don't just sudo if you want to make something work. Despite the famous xkcd, that's not how this works. Least privilege at all times.
• Antivirus software still isn't required

Unless you have some extraordinary usage scenarios, that's it really.