5 Security Lessons WannaCry Taught Us the Hard Way

The scope and severity of the fallout from the WannaCry attacks over the past week elicits plenty of "we told you so" head shakes about the dangers of ransomware. With a lightning-fast speed, the blackmail worm spread quickly. On Friday it reached 74 countries and more than 45,000 systems. By Monday, those numbers had ballooned to 150 countries and 200,000 systems, according to Europol.And even when security researchers found a kill-switch for the attack that they used to their advantage,...