WannaCry ransomware is still spreading fast, but 'kill switch' defenses hold for now | TechCrunch
The Hours of WannaCry - Cisco Umbrella
WannaCry Kill-Switch(ed)? It's Not Over! WannaCry 2.0 Ransomware Arrives
Someone Created a WannaCry Version That Doesn't Use a Kill Switch
WannaCry Ransomware Analysis: Lateral Movement Propagation - Acalvio
Researchers find Petya ransomware vaccine, but no kill switch | Healthcare IT News
WannaCry Ransomware Version With Second Kill Switch Detected and Shut Down
WannaCry Malware Profile | Mandiant
Wannacry Ransomware | Europol
WannaCry: Second kill switch has been found in a different variant, maybe a good idea to make sure these domains are reachable from you LAN : r/sysadmin
WannaCry: Techie finds kill switch to ransomware. Here's how to save your data from cyberattacks - India Today
WannaCry Kill-Switch(ed)? It's Not Over! WannaCry 2.0 Ransomware Arrives