Passwords Exposed: acs.ryerson.ca Leak Hits 1,713 Records

HEROIC analysts found a stealer log labeled "acs.ryerson.ca - 1.713 emails" being shared by a Telegram user. Dated 10-Jun-2026, the file contains 1,713 records tied to the acs.ryerson.ca domain, including email addresses, plaintext passwords, and the URLs of the accounts those passwords open.

Why This acs.ryerson.ca Leak Is Dangerous

Each of the 1,713 records in this file pairs a working email and password with the exact site it opens, so an attacker doesn't have to guess where a stolen login will work. Because the domain here is tied to an academic institution, exposed accounts can be linked to school email systems that people rely on for years, often long after they've graduated or moved on, making the exposure harder to notice and easier to overlook.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linked to each set of credentials

Why This Matters

Because the passwords are stored in plaintext, they work exactly as typed, with no cracking required. For the 1,713 people in this file, the immediate risk is account takeover on the accounts named in the leak. If any of these passwords were reused on personal email, banking, or shopping accounts, that opens the door to credential stuffing well beyond this one domain, spreading the risk to accounts that have nothing to do with the original leak.

How Stealer Logs Work

A stealer log is produced by malware that infects a device, quietly copies the usernames, passwords, and site addresses saved in the browser, and sends that data back to whoever controls the malware. Because a single infected device can hold logins for many unrelated accounts, even a smaller file like this one can affect people across several different services at once. These logs are then shared or sold on platforms like Telegram, where anyone can pick them up and begin testing the credentials.

Check If You Are Affected

If you've ever used an email tied to acs.ryerson.ca, it's worth checking your exposure now. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including stealer logs like this one, and tells you right away if your information turned up. If it did, changing that password and turning on two-factor authentication closes the door before anyone can use it against you.