The company says it's investigating 'whether there is any truth whatsoever to this report by a competitor news organization.'
Ardit Ferizi is accused of providing ISIL with the personal information of approximately 1,351 U.S. military and government personnel.
The 25 profiles appear to be tied to the Iranian hacker group TG-2889.
The breach remained undetected for five months, according to the New York Times.
The researchers found that 'an inordinate number of proxy servers' used by the Angler Exploit Kit were on servers belonging to Limestone Networks.
The scheme, which caused more than $300 million in losses, is the largest ever prosecuted in the United States.
HackerOne co-founder and CTO Alex Rice discusses what the Internet Bug Bounty is all about.
It's the 'largest known Apple account theft caused by malware,' according to Palo Alto Networks researchers.
The leaked data includes 36 million customer records, listing names, addresses, user names, passwords and the last four digits of credit card numbers.
The Obama administration and some in the private sector believe sharing threat information can help thwart cyberattacks. But not everyone is convinced.