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				Ransomware - which effectively holds files and networks hostage 
				unless a payment is made - has steadily climbed to the top of 
				America's security agenda as the criminals behind it become 
				increasingly well-resourced.
 Speaking via a webcast, Mayorkas said that ransomware was "a 
				particularly egregious type of malicious cyber activity" and 
				listed it as the first of several top priorities that his 
				department would tackle in the online sphere.
 
 Many ransomware operators work out of jurisdictions with a lax 
				attitude to cybercrime, and Mayorkas said he would seek to hold 
				accountable "governments that do not use the full extent of 
				their authority to stop the culprits."
 
 Mayorkas said the government would seek to disrupt not just 
				those that launched ransomware operations but also "the 
				marketplaces that enable them."
 
 Mayorkas did not say so explicitly, but a DHS official said the 
				reference was to underground forums that help cybercriminals 
				franchise out their malicious campaigns.
 
 Earlier in his address, Mayorkas laid out an ambitious role for 
				the Cybersecurity and Infrastructure Security Agency (CISA), 
				which is DHS' cyber arm. He said the agency would "quarterback" 
				the U.S. government's digital defenses and serve as a "trusted 
				interlocutor" between business executives and public servants.
 
 "It is clearly best positioned to be the tip of the spear and 
				the front door for the U.S. government's engagement with 
				industry on cybersecurity," he said.
 
 (Reporting by Raphael Satter; Editing by Cynthia Osterman and 
				Bill Berkrot)
 
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