![Researcher, 22, unintentionally discovered "kill switch" that halted worldwide cyberattack, officials say - CBS News Researcher, 22, unintentionally discovered "kill switch" that halted worldwide cyberattack, officials say - CBS News](https://assets1.cbsnewsstatic.com/hub/i/r/2017/05/13/6eb90bc4-ef65-4eca-b956-aeb57573f7fd/thumbnail/1200x630/de4f3330645a2d808d67e355bae155a8/ap-17132543156534.jpg?v=867e41af7e860d9286e5bd7e91ee0db8)
Researcher, 22, unintentionally discovered "kill switch" that halted worldwide cyberattack, officials say - CBS News
![WannaCry Ransomware Foiled By Domain Killswitch - Darknet - Hacking Tools, Hacker News & Cyber Security WannaCry Ransomware Foiled By Domain Killswitch - Darknet - Hacking Tools, Hacker News & Cyber Security](https://www.darknet.org.uk/wp-content/uploads/2017/05/WannaCry-Ransomware-Foiled-By-Domain-Killswitch-640x481.jpg)
WannaCry Ransomware Foiled By Domain Killswitch - Darknet - Hacking Tools, Hacker News & Cyber Security
![Researcher, 22, unintentionally discovered "kill switch" that halted worldwide cyberattack, officials say - CBS News Researcher, 22, unintentionally discovered "kill switch" that halted worldwide cyberattack, officials say - CBS News](https://assets1.cbsnewsstatic.com/hub/i/2017/05/13/6eb90bc4-ef65-4eca-b956-aeb57573f7fd/ap-17132543156534.jpg)
Researcher, 22, unintentionally discovered "kill switch" that halted worldwide cyberattack, officials say - CBS News
![NHS cyber attack: Analyst discovers WannaCry ransomware's hidden kill switch 'by accident', halts thousands of attacks for $10 | BelfastTelegraph.co.uk NHS cyber attack: Analyst discovers WannaCry ransomware's hidden kill switch 'by accident', halts thousands of attacks for $10 | BelfastTelegraph.co.uk](https://s3.eu-west-1.amazonaws.com/prod-mh-ireland/5680c95c-997a-11ed-8e0d-0210609a3fe2.jpg)