Researcher Slows Spread of Ransomware by Registering Domain Name

 A 22-year-old U.K.-based threat-intelligence researcher is credited with stumbling onto a “kill switch” embedded in the code of a virus that created an international cyberattack, which helped slow the computer worm’s spread. As part of his research into stopping viruses like this one, he explained in a blog post, he often snaps up such unregistered malware “control” server domains.