If you think you are immune from a ransomware attack because you are a small business in a small town and have nothing of value for hackers...don't be fooled.
Hackers know that your town must supply water, trash...police services, etc. They are banking on you paying their ransom request...like this town which was attacked... Municipal computers hacked
Protect yourself from ransomware attacks with:
a rock-solid backup
security measures like an enterprise firewall
antivirus and anti-malware on your computers
spam protection on your email system
AND employee training
Get with a good computer support company to help you put these things in place.
Don't wait until there is an emergency, put systems in place to protect your business before there is a problem and save yourself a lot of hassle.