As many as 165 customers of cloud storage provider Snowflake have been compromised by a group that obtained login credentials through information-stealing malware, researchers said Monday.
On Friday, Lending Tree subsidiary QuoteWizard confirmed it was among the customers notified by Snowflake that it was affected in the incident. Lending Tree spokesperson Megan Greuling said the company is in the process of determining whether data stored on Snowflake has been stolen.
“That investigation is ongoing,” she wrote in an email. “As of this time, it does not appear that consumer financial account information was impacted, nor information of the parent entity, Lending Tree.”
Researchers from Mandiant, a Google-owned security firm Snowflake retained to investigate the mass compromise, said Monday that the companies have so far identified 165 customers whose data may have been stolen in the spree. Live Nation confirmed 10 days ago that data its TicketMaster group stored on Snowflake had been stolen following a posting offering the sale of the full names, addresses, phone numbers, and partial credit card numbers for 560 million Ticketmaster customers.
Santander, Spain’s biggest bank, said recently that data belonging to some of its customers has also been stolen. The same group advertising the Ticketmaster data offered the sale of Santander data. Researchers from security firm Hudson Rock said that stolen data was also stored on Snowflake. Santander has neither confirmed nor denied the claim.
Mandiant’s Monday post said that all the compromises it has tracked so far were the result of login credentials for Snowflake accounts being stolen by infostealer malware and stored in vast logs, sometimes for years at a time. None of the affected accounts made use of multifactor authentication, which requires users to provide a one-time password or additional means of authentication besides a password.