Calgary Marathon Data Breach: 835 Logins Exposed, Check Now

HEROIC analysts identified 835 login records reportedly tied to Calgary Marathon, the registration site for the annual Calgary running event, dated August 1, 2023. The file reportedly pairs email addresses with plaintext passwords, meaning anyone who reads it can see the passwords exactly as they were typed. The only way to know if your information is part of this file is to scan your email. Because nothing was scrambled or hashed, the 835 entries in this file are usable the moment someone opens it.

What 835 Readable Passwords Make Possible

When a password sits in plain, readable text next to an email address, an attacker does not need any special tools or technical skill to use it. They can simply read the pair and try logging in, either on the Calgary Marathon site itself or on other services where the same password might have been reused. This turns a small file into a fast, low effort path for someone to take over accounts that have nothing to do with a running event.

The Two Pieces of Data in This File

• Email Address: identifies you directly and lets an attacker send convincing, targeted phishing messages or attempt logins on other sites tied to that address.
• Plaintext Password: readable immediately with no cracking required, and dangerous anywhere you have reused it for another account.

Why a Small File Can Still Cause Big Problems

Account takeover is the clearest risk here: if the password was reused anywhere else, an attacker can walk right into email, social media, or financial accounts using the exact credentials from this file. From there, fraud and identity theft often follow, since a compromised email account is frequently the key used to reset passwords on everything else tied to it.

How a Database Leak Like This Happens

A breach of this type reportedly involves records being taken directly from the service's own systems rather than collected from an infected device or assembled from older lists. Once pulled, the records are typically packaged together and passed around on hacking forums and messaging channels until they are exposed. The reader has no control over how the data left the service, only over what they do once it is out.

Is Your Email in the Calgary Marathon File?

The fastest way to find out is to scan your email and see if it turns up in this or any other exposed file. If it does, change the password on the Calgary Marathon account right away, and update it anywhere else you used the same one, since it was stored in a form anyone could read. This check works the same whether the email you search is a personal inbox or a work address, so it is worth running both.