2024 Snowflake Data Security Breach: Everything You Need to Know

By Perry Tapiero
September 30, 2025 | 5 min read

The 2024 Snowflake-related security incident was heard around the world as millions of customer and employee records were compromised. While Snowflake’s infrastructure wasn’t directly breached, the incident exposed critical weaknesses in customer security practices and third-party access management. 

Read on to learn exactly what happened, and how to keep your own organization safe. 

NOTE: Snowflake’s core infrastructure was never actually compromised. The attackers used stolen customer credentials to access individual Snowflake accounts. Why does this distinction matter so much? It shifts responsibility from Snowflake, to the security practices of organizations using Snowflake. 

How Big Was the Breach Actually? 

“Biggest breach of 2024” sounds big, but how big is that actually? 

Well, it’s hard to put an exact number on it. Some reports said as many as 165 organizations were affected. Notable companies included Advance Auto Parts, Ticketmaster, and Santander Group. 

This was a full-blown credential theft attack. A hacker group called “ShinyHunters” listed millions of customer and employee records for sale on a dark web marketplace called Breach Forums. 

After the FBI found customer records on Breach Forums, they shut down the site, but ShinyHunter quickly created another. The hackers claimed that 590 records from Ticketmaster and Santander and 2.3 million records from Advance Auto Parts were listed for sale. 

How Did the Hackers Manage This? 

According to cybersecurity investigations, the breach likely occurred because of a compromised third-party contractor, not a direct attack on Snowflake’s infrastructure. A blog post stated that Mandiant, a Snowflake-contracted security firm, was possibly at fault. 

Even the ShinyHunters themselves have stated that contractors are likely at fault in an interview between one of their representatives and Wired

So, what probably happened? Many suspect an info-stealer malware was able to access an employee computer, stealing unencrypted Snowflake credentials kept on Jira. The hackers used this to access the Snowflake account because there was no two-factor authentication (2FA) or multi-factor authentication (MFA). 

What Was The Fallout

The breach caused widespread impact across multiple fields: 

Financial Impact

Affected companies were left facing: 

  • Significant costs
  • Big legal bills
  • Confused customers

Snowflake itself also heavily invested in additional security measures and forensic investigation. 

Market Response

Snowflake’s stock price declined 5% following the initial breach reports, though it has since recovered. Customer confidence still required some time to recover. 

Legal Consequences

Multiple class-action lawsuits were filed against Snowflake and the affected customer organizations. Multiple regulatory bodies in various jurisdictions launched investigations into data protection compliance. 

Industry Trust

The incident shone a spotlight on cloud data security vulnerabilities. This prompted an industry-wide review of third-party protocols and credential management practices to prevent something like this from ever occurring again. 

Protecting Your Snowflake Environment: Lessons to Learn

The 2024 incident provides clear guidance on security Snowflake deployments: 

  • Implement strong authentication practices: Always, always, always enable multi-factor authentication (MFA) for all Snowflake accounts – including service accounts used by third-party tools. This single step could have prevented this entire breach. 
  • Monitor access patterns: Establish baseline usage patterns and set up automated alerts on anomalies. Look for unusual login locations, off-hours access, or unexpected data export volumes. 
  • Secure third-party integrations: Regularly audit all external tools with Snowflake access. Use role-based permissions and regularly rotate credentials for automated systems. 
  • Network security controls: Implement IP whitelisting to restrict Snowflake access to known, trusted networks. This means even if someone’s credentials are compromised, you can limit overall exposure. 
  • Regular security audits: Conduct quarterly reviews to user permissions, active sessions, and data access logs, Remove any inactive accounts or unnecessary privileges. 

Security incidents like this underscore the critical need for continuous Snowflake environment monitoring. That’s where third-party tools like Yuki come in. 

Yuki provides: 

  • Automated security alerting
  • Unusual pattern detection
  • Comprehensive audit logging to identify potential breaches

Beyond security, Yuki optimizes costs and performance. Previous clients have seen monthly savings up to 30%, all while strengthening their security. 

Curious to see how you can secure your Snowflake performance while reducing costs? Reach out now for your free demo

By Perry Tapiero
Perry Tapiero leads marketing at Yuki, driving demand generation and brand growth for B2B and B2C SaaS companies in FinTech, AdTech, and Cybersecurity. With 15+ years of experience, he specializes in go-to-market strategies, ICP refinement, and managing multi-million-dollar campaigns using HubSpot and Salesforce. Previously at other companies, he led ABM, PBM, and product marketing initiatives that drove ARR growth and helped achieve Gartner Magic Quadrant recognition. Perry was a regular contributor for marketers and now shares his insights on LinkedIn.

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