technology #Cybersecurity #Government #Research #Threats #ArcaneDoor #China #Cisco #CybersecurityAndInfrastructureSecurityAgencyCISA #EmergencyDirective #Firestarter #Malware #NationStateHackers #NetworkEdgeDevices US, UK agencies warn hackers were hiding on Cisco firewalls long after patches were applied CyberScoop 3h ago