One Telegram Upload, 1,159 Records: Inside the rbs.co.uk Leak

In June 2026, HEROIC analysts found a combolist file referencing rbs.co.uk circulating on Telegram. The file contains 1,159 records combining email addresses, plaintext passwords, and related URLs, gathered by a threat actor targeting accounts linked to the rbs.co.uk domain.

Why the rbs.co.uk Leak Is Dangerous

Because the passwords are stored in plaintext, an attacker does not need to crack or guess anything. They can simply read the password next to each email address and use the included URL to know exactly where to try logging in.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters If You Use This Account

If your email and password are in this file and you have reused that password anywhere else, an attacker can attempt credential stuffing against your other accounts. That risk extends to account takeover, financial fraud, and identity theft depending on what else is tied to the account.

How Domain-Specific Combolists Like This Get Made

Lists focused on a single domain are usually created by filtering larger breach dumps or stealer logs down to accounts matching that domain, then repackaging the filtered results into a standalone file. This does not necessarily mean the domain's own systems were breached directly, only that credentials tied to it were harvested from other sources and grouped together.

Check If Your rbs.co.uk Email Was Exposed

You can find out in seconds. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records. Run a scan now and update your password if you find a match.