The operators behind the Lornenz ransomware operation have been observed exploiting a now-patched critical security flaw in Mitel MiVoice Connect to obtain a foothold into target environments for follow-on malicious activities.
"Initial malicious activity originated from a Mitel appliance sitting on the network perimeter," researchers from cybersecurity firm Arctic Wolf said in a report
http://dlvr.it/SYKY91
http://dlvr.it/SYKY91