Online chess giant Chess.com has disclosed a data breach compromising personal information of 4,541 individuals, according to a filing with the Maine Attorney General’s Office.
The incident occurred on June 5, 2025, and was discovered nearly two weeks later on June 19, 2025. Chess.com confirmed that an external hack led to unauthorized access of private data.
Hackers obtained names and personal identifiers of affected users, though Chess.com has not provided a full data breakdown. The breach impacted users across multiple regions, including at least one resident of Maine.
Chess.com Response
Chess.com began notifying impacted individuals on September 3, 2025, via written notices and is offering 12 months of complimentary identity theft protection services.
Elias Colabelli, Head of Legal and Data Protection Officer at Chess.com, stated the company is strengthening its systems to prevent similar incidents.
Although the number of affected users is relatively low compared to other large-scale breaches, this serves as a reminder that even major platforms remain targets for cybercriminals. With over 150 million users worldwide, Chess.com holds extensive personal data, making it a valuable target.
Experts warn such breaches could lead to identity theft, phishing, and fraud once stolen data circulates in underground markets.
Chess.com has not disclosed whether law enforcement is involved but continues to enhance security and monitor its systems.
Users are advised to stay alert, monitor financial accounts, and be cautious of suspicious emails leveraging any compromised personal information.
We have reached out to Chess.com for further details and will update the article as new information becomes available.
Recent Data Breaches
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C3’s Perspective
Incidents like the Chess.com data breach highlight how dangerous weak or scattered password practices can be. At C3, we recommend using a centralized password manager like Zoho Vault.
With Zoho Vault, your team can:
Securely store and share credentials in one encrypted platform.
Enforce stronger password policies without relying on memory or sticky notes.
Track and manage access, reducing the risk of stolen or reused passwords.
By centralizing password management, businesses lower the chances of a single breach spreading across multiple systems. It’s a simple but powerful step toward better security.
Zoho Vault is part of the Zoho Workplace office suite.