Scattered Spider, also known as UNC3944, comprises hackers based
in the United States and UK and has previously targeted
telecommunications and business process outsourcing companies,
the Bloomberg report added.
The hackers started targeting Caesars as early as Aug. 27,
according to the people. The group had also demanded a ransom
from MGM, while the casino operator's systems stayed paralyzed
for a third day. Scattered Spider may have worked with ALPHV on
the MGM hack, the report said, citing sources.
MGM and Caesars did not immediately respond to Reuters requests
for comment.
The FBI said it was investigating the MGM hack. The rating
agency Moody's warned the incident could negatively impact MGM's
credit rating.
(Reporting by Seher Dareen in Bengaluru; Editing by Shailesh
Kuber)
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