Snowflake Data Breach: Hundreds Affected

Snowflake Data Breach: Hundreds Affected

Sofia Martinez
2 min read

Data Breach at Snowflake Raises Concerns for Hundreds of Customers

Security researchers have recently uncovered a significant data breach affecting numerous customers of Snowflake, a cloud storage provider. The breach, which commenced in April, involved cybercriminals leveraging stolen credentials to access and extract data from Snowflake's cloud storage. The attackers, referred to as UNC5537, are believed to be financially motivated and have been active since April 14. Mandiant, the incident response firm involved in the investigation, highlighted that a majority of the stolen credentials were linked to historical infostealer infections, some dating back to 2020. Despite the seriousness of the breach, Snowflake has not yet implemented multi-factor authentication (MFA) for its customers, although they are reportedly working on a plan to do so.

Key Takeaways

  • Numerous Snowflake customers have had their data stolen through the use of stolen credentials.
  • Mandiant and Snowflake have informed 165 customers about potential data theft.
  • The cybercriminal gang UNC5537 is carrying out an ongoing threat campaign with financial motives.
  • The majority of the stolen credentials were linked to historical infostealer infections, some dating back to 2020.
  • Snowflake is in the process of developing a plan to enforce multi-factor authentication but has not provided a specific timeline.


The recent data breach at Snowflake, orchestrated by UNC5537, underscores the vulnerability of cloud storage to credential theft, particularly exacerbated by the absence of MFA. Historical infostealer infections have facilitated the breach, impacting numerous customers and potentially compromising sensitive data. This breach leads to immediate heightened security risks for affected businesses and could result in long-term implications such as potential regulatory fines and reputational damage. Snowflake's delayed implementation of MFA emphasizes the urgency for robust security measures within cloud services. Future developments may witness heightened regulatory scrutiny and a push for mandatory MFA across similar platforms.

Did You Know?

  • UNC5537: UNC5537 is an identifier for a specific cybercriminal group involved in the data breach at Snowflake. The "UNC" prefix in cybersecurity typically stands for "Uncategorized," denoting threat actors whose identity or affiliation is not publicly disclosed or fully understood. These groups are often recognized for sophisticated and financially motivated cyberattacks.
  • Infostealer Infections: Infostealers are malware designed to pilfer sensitive information from compromised systems, including login credentials, personal data, and financial information. Historical infostealer infections refer to instances where systems were previously infected with such malware, and the stolen data, including credentials, was subsequently used in later attacks, highlighting the long-term risks associated with malware infections.
  • Multi-Factor Authentication (MFA): MFA is a security mechanism that requires users to provide two or more verification factors to access a resource, such as an application, online account, or VPN. It adds an additional layer of security, making it more challenging for unauthorized persons to gain access. Typically, MFA involves combining something the user knows (like a password), something the user has (like a smart card or a mobile device), and something the user is (like a fingerprint or other biometric element).

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