freeserve.com Data Breach: 15,354 Emails and Passwords Exposed

What HEROIC Analysts Found

In June 2026, HEROIC analysts found a stealer log posted to Telegram containing 15,354 records tied to freeserve.com, a well known former UK internet and email provider. The log included email addresses, plaintext passwords, and the login URLs those credentials open. This is one of the larger logs in this batch, made up of data harvested from individually infected devices rather than a single company breach.

Emails and Passwords: A Combination Worth Worrying About

15,354 email addresses paired with plaintext passwords is enough data to fuel large scale automated attacks. Because each password sits next to the exact login URL it unlocks, an attacker doesn't need to figure out where to try a credential, it's handed to them. That pairing is what separates a stealer log from a simple leaked email list.

What Was Exposed

• Email addresses
• Plaintext (unencrypted) passwords
• Login URLs tied to each set of credentials

Why This Matters

With passwords stored as plain text, there's no encryption slowing an attacker down. Anyone who reused a freeserve.com password on another account is exposed to credential stuffing, where the same login is tested automatically across banking, shopping, and social media accounts. A compromised email address can also be used to reset passwords on other services, expanding the damage well beyond the original account.

How a Log of This Size Gets Assembled

Stealer logs come from infostealer malware, malicious software that infects a device, often through a fake download or cracked application, and quietly harvests saved browser passwords, autofill data, and active sessions. A log exceeding 15,000 records typically reflects either widespread infection or the merging of several smaller logs before being posted to Telegram, where criminals build searchable collections from data like this.

Check If You Are Affected

Given the size of this leak, it's worth checking whether your credentials are included, especially if you have ever used a freeserve.com email address. HEROIC's free breach scanner checks your email against a database of more than 400 billion exposed records, including stealer logs like this one, so you can find out in seconds.