Hackers can encrypt your files unless you protect them against ransomware attacks. Protect your files and your clients by enabling Controlled Folder Access in Windows and using link protection in Outlook and Gmail. Remember to continuously backing up files with an external hard drive or cloud service like Carbonite. Learn more by reading articles about cybersecurity and ransomware. Also read the ABA's Handbook on Cybersecurity and Survey of Best Practices. Also see PC Magazine's Review of Cloud Backup Services and visit security websites like NoMoreRansom and Krebs on Security.