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Cisco
security unit pulls plug on ransomware scammer
By Pete Carey /
October 6, 2015 at 9:03 AM
Cisco Systems’ Talos security unit said
Tuesday that it has pulled the plug on a pernicious group that
encrypted people’s computer files and demanded payment to decrypt them.
Talos threat research Nick Biasini said his group had
disrupted a group using the Angler Exploit Kit to target 90,000 victims a day,
generating more than $30 million annually in ransom. The kit has been used by
other groups for a combined $60 million in annual ransom, the company reported.
“Cisco determined that an inordinate number of proxy servers
used by Angler were located on servers of service provider Limestone Networks,”
he reported.
The crooks had used stolen credit cards for servers on
Limestone’s system. The company pulled the plug on them when Cisco contacted
it, and cooperated with security researchers, according to a report by Reuters.
The Talos unit collaborated with Level 3 Threat Research
Labs and OpenDNS to peer over the shoulder of the scammers and see how they
operated.
Then Cisco broadcast Angler protocols and mechanisms “so
others can protect their communities,” Biasini wrote.
“This is a significant blow to the emerging hacker economy
where ransomware and the black market sale of stolen IP (intellectual
property), credit card info and personally identifiable information are
generating hundreds of millions of dollars annually.”
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