Ransomware encrypts and locks all data on a workstation, system or network.
Still unsure? For a simple overview please view this YouTube video (30 sec.):
So what’s your best defense? Be aware of everything you receive electronically. Some of the biggest ransomware attacks have been through attachments, and links in emails using common file types from trusted sources. Inspect everything you receive digitally, especially if you do not recognize the sender.