ZeroFox’s Chief Executive James Foster attributed law enforcement’s sluggish response to a lack of manpower. In total, roughly 230 organizations have been hit since the beginning of last year, according to a tally by the Baltimore, Maryland-based cybersecurity firm ZeroFox, which has helped Caesars contain the fallout. Security analysts tracking the breaches, meanwhile, have found a range of victims across nearly every industry – starting with telecoms and outsourcing firms to healthcare and financial service companies. FBI officials first began looking at the hackers' operations more than a year ago. The sources say that, following the September casino hacks, the FBI's investigation took on new urgency.

Some have been collecting evidence leading to the hackers' identities and are assisting law enforcement, according to the five insiders. Neither company responded to a request for comment.ĬrowdStrike, Alphabet's Mandiant, Palo Alto Networks, and Microsoft are among the main American cybersecurity firms responding to private company breaches by the hackers. Caesars paid around $15 million in ransom to regain access to its systems from the hackers, according to reporting by the Wall Street Journal. The MGM breach disrupted operations at its casinos and hotels for days and cost the company roughly $100 million in damages, it said in a regulatory filing last month.

For more than six months, the FBI has known the identities of at least a dozen members tied to the hacking group responsible for the devastating September break-ins at casino operators MGM Resorts International MGM.N and Caesars Entertainment CZR.O, according to four people familiar with the investigation.ĭubbed by some security professionals as 'Scattered Spider,' the hacking group has been active since 2021 but it grabbed headlines following a series of intrusions at several high profile American companies.

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