Chess.com Breach Exposes Personal Data of Over Four Thousand Users

Chess.com has confirmed that cyber-attackers exploited a third-party file-transfer application, exposing personal details of 4,541 users—including at least one individual in Maine. The breach occurred on 5 June 2025, with a second intrusion on 18 June 2025, but came to light only on 19 June, when an internal investigation began. Chess.com breach exposes personal data of 4,541 users remained unnoticed until that date.

Chess.com operates from Orem, Utah, and has assured users that its own infrastructure and account systems were not compromised; only the external file-transfer tool was affected. No financial credentials, passwords, or login data were exposed. The data scraped included users’ names and unspecified personal identifiers—not detailed categories such as account credentials.

The company began sending written notifications to affected individuals on 3 September 2025, in compliance with data-security regulations. Maine authorities received formal notification, and federal law enforcement was also informed. Chess.com is offering one year of complimentary identity-protection services via IDX, which include credit monitoring, cyber-scan monitoring and identity-theft recovery; enrolment must be completed by 3 December 2025.

Chess.com engaged external cybersecurity experts to contain the breach and secure its systems post-incident. The company urged affected users to remain alert for phishing attempts, monitor financial statements and credit activity, and take advantage of the protection services offered.



Notice an issue?

Arabian Post strives to deliver the most accurate and reliable information to its readers. If you believe you have identified an error or inconsistency in this article, please don't hesitate to contact our editorial team at editor[at]thearabianpost[dot]com. We are committed to promptly addressing any concerns and ensuring the highest level of journalistic integrity.


Loading next story…
Just in:
Pezeshkian conditions Hormuz access on sanctions relief // 2026 Russian State Duma Elections Further Consolidate Putin’s Reign // Jaishankar’s Speech At UNGA: Multilateralism, Not ‘Choosing Camps’ // Paramount-Warner: Hollywood’s $110 Billion Mega Merger // Eureka Marks World Cleanup Day 2026 in Germany with “Find the Unseen” Campaign // Hongkong Land Foundation launches “The Central Spark Series”, reimaging Central through People, Place, and Culture // Supreme Court Tests The Limits Of Mandatory Patriotism // Huspy commits $86 million after Integra acquisition // Hong Kong Academy for Wealth Legacy Showcases Award-Winning Talent at Inaugural “Inspiring Asia” Hong Kong Regional Awards // MAIR signs deal for 70% Eslab stake // Leaked GitHub app keys retain live access // SoftBank markets jumbo AI bonds at record yields // AUSTRIACARD Delivers First Jaywan Payment Cards for Wio Bank in the UAE // Federal judge restores access for three barred outlets // Leaked GitHub app keys retain live access // From a Disney stage to the Hong Kong Coliseum Hong Kong Disneyland Donates HK$1.8 Million to Po Leung Kuk to Nurture Young Dance Talent // Trump’s White House Media Ban: Fourth Estate Under Attack In USA // International Stars Gather in Hualien, Taiwan // Nanyang Interview: Exploring Opportunities in China’s Largest Free Trade Port — Financial Video Series Goes Live // Singapore-built AI oral examiner PSLEPrep analysed 12,459 answers in English and Chinese for its first Oral Practice Report. //