Three years ago, the WannaCry ransomware worm quickly compromised hundreds of thousands of out-of-date, unpatched computers and servers. Companies that use outdated systems and do not rigorously patch those systems are at risk, experts say. The cost of cleaning up the damage from the “ransomworm” attack topped $8 billion, according to one estimate. The attack shocked businesses with its speed and damaging effects, but it fell short of its potential to do damage because of the efforts of Marcus Hutchins, a cybersecurity researcher.”]