This is an FYI to all concerned about the Russia-Ukraine situation.
Make sure that your anti virus software and firewall software are up to date. Cyber attacks could be coming in a firestorm. Make sure that your anti-spyware software is up to date.
I'm sure that @St-Sinner can give some additional tips
A reliable VPN service and two-factor authentication might also be a good idea to have ready. For mobile, there are some really good malicious adblockers out there as well. Not sure how helpful these might be-
[cisa.gov]