Researcher finds 'kill switch' for cyberattack ransomware

A cybersecurity researcher appears to have discovered a "kill switch" that can prevent the spread of the WannaCry ransomware -- for now -- that has caused the cyberattacks wreaking havoc globally, they told AFP Saturday.Friday's wave of cyberattacks, which affected dozens of countries, apparently exploited a flaw exposed in documents leaked from the US National Security Agency.The attacks used a technique known as ransomware that locks users' files unless they pay the attackers a designated sum