NationStates Data Breach: Game Site Shutdown and Security Measures Taken

NationStates, an online multiplayer game, has acknowledged a security breach after temporarily shutting down its website to investigate a security issue.

The game, created by Max Barry and inspired by his novel Jennifer Government, revealed that an unauthorized individual accessed its production server and copied user data.

Unauthorized Access by Vulnerability Reporter

On January 27, 2026, NationStates received a report from a player who identified a critical vulnerability in its code.

While testing the bug, the player exceeded authorized limits and gained remote code execution on the main server, allowing them to copy code and user data.

“The player, who has previously reported bugs to us, was not authorized to access the server or gain privileged access,” stated Barry in a breach notice.

Although the individual claimed to have deleted the data, the site cannot verify this, so both the system and data are considered compromised.

The breach originated from a flaw in a new feature called “Dispatch Search,” introduced on September 2, 2025. The attacker exploited insufficient input sanitization and a parsing bug to achieve remote code execution.

NationStates is working to rebuild the server and assess the extent of data access, as the breached data includes email addresses, MD5 password hashes, IP addresses, and browser UserAgent strings.

Exposed Data and Precautions

The exposed data includes email addresses, passwords stored as MD5 hashes, IP addresses, and browser UserAgent strings used for login. The breach did not compromise real names, addresses, phone numbers, or credit card information.

The website is expected to be back online within a few days, with enhanced security measures and upgraded password security in place.

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