A polymorphic global threat

Róisín Kiberd on the threat that’s ready for its sophomore act

WhiteRose. Aura. Scatter. SamSam. Gandcrab. Jaff. Locky. Black Ruby. InfiniteTear. The names of ransomware programs are strange and arcane and oddly glamorous. Ominous, too, because even as one fades from the headlines another springs up to replace it, spawning apparently limitless variations and threats.

Recent reports describe ransomware being overtaken by cryptojacking, a passive variety of hacking where the victim’s computer is made to mine cryptocurrency on the hacker’s behalf. Still, experts warn ...