The moment came in 2016, back in the days when ransomware was still new. The email subjects seemed urgent: “You’ve missed a delivery!” or “Please open this important document now.” People opened the emails and nothing happened—not at first. But soon, we started to get calls: Our clients couldn’t access their files, or they couldn’t open an application. At the time, we had around 2,000 clients, and each week, we’d get a call with the same complaint. Our service desk would offer to take a look, and sure enough, when they looked into our clients’ machines they would find a ransomware note alongside encrypted files.