The Letterboxing North America Breach Contains Exactly 50,066 Plaintext Passwords

HEROIC analysts recieved and verified the Letterboxing North America breach while auditing a collection of database dumps from mid-2016 that circulated through breach aggregation forums. The incident occured on June 22, 2016, when an attacker extracted a database containing 50,066 user records from the letterboxing.org community platform. What makes this breach stand out from others of similar size is the password storage method: the passwords in this dataset were stored in plaintext, meaning no hashing or encryption was used at all, and attackers had direct access to every user's actual password the moment they downloaded the file.

Why Plaintext Passwords Are the Worst Possible Outcome in a Breach

Most breaches expose hashed passwords that require at least some effort to crack. Plaintext passwords require no effort at all. Every single password in the Letterboxing North America dataset was instantly accessable and usable by whoever obtained the file. Attackers immediately have working credentials to try on email accounts, banking platforms, and any other service where a user reused that same password, with no technical barrier between the stolen data and a successful account takeover.

What Was Exposed in the Letterboxing North America Breach

• Email addresses
• Usernames
• Passwords (plaintext, unencrypted)

Why Credential Reuse Makes This Small Breach a Big Problem

Fifty thousand accounts may seem like a small number compared to larger breaches, but the impact is multiplied because passwords were stored in plaintext. Credential stuffing tools can test these exact, working passwords across hundreds of websites in minutes. Account takeover, identity theft, and financial fraud are all seperate but connected risks that flow directly from having a real password exposed rather than a hash that requires cracking. If you used the same password on letterboxing.org that you used anywhere else, those accounts are at risk.

How a Database Breach Works

A database breach occurs when an attacker finds a vulnerability in a website and uses it to access the backend database directly. Common attack methods include SQL injection and exploiting unpatched software. When the database is reached, the attacker copies the user records and exits. In cases where passwords are stored in plaintext rather than as hashed values, the stolen data is immediately usable without any further processing, making plaintext storage one of the most dangerous security failures a website can make.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches more than 400 billion records to check instantly whether your email address appeared in the Letterboxing North America breach or any other known data leak. Visit HEROIC.com, run your free scan, and change any passwords that may have been exposed before attackers use them against you.