Recent years have seen ransomware grow from an abstract curiosity into a major problem anyone can face — and that hundreds of thousands of people already have. Now a mass industry, ransomware even shows a division of labor, with some criminals writing malicious code and others selecting targets and using the code to infect them, earning a percentage of the ransom.

In the past couple of years, ransomers have focused increasingly on organizations, but that does not mean ordinary users are in the clear — people still get hit, sometimes even by accident. If you don’t want to lose your photos, documents, and other files, you cannot avoid picking up a few antiransomware skills and habits.