As you most likely know, the US recently conducted a missile strike in Iraq against an Iranian official. Due to that, our government has issued an alert about possible cyber threats as a response from Iran.
Obviously, the threat to home users and very small businesses is fairly remote, but it does pay to be aware and make sure you're protected.
As a minimum you should always have a good antivirus and a good firewall in place. Small businesses should also consider having a more robust business grade or cloud firewall in place. And always be aware of phishing email and website scams.