It’s not hard for a well-funded state-sponsored hacking group to break into corporate networks and compromise systems with malware, but what’s challenging for them is to keep that backdoor and its communication undetectable from a firewall and other network monitoring applications.
However, a cyber-espionage group known as “Platinum,” that is actively targeting governmental organisations,
Source: First-Ever Data Stealing Malware Found Using Intel AMT Tool to Bypass Firewall