Last Friday hackers launched a massive cyberattack that targeted hundreds of thousands of users and organizations in more than 150 countries. Using a “ransomware” virus called WannaCry, the malware infected computer systems by locking users out of their files and demanding money to set them free. Regardless of whether the user paid up or not, though, the virus was easily able to spread to other computers linked within the same network. Eventually one lucky researcher discovered a “kill switch” in Continue reading →