730 .UA Mail Access Leak Gives Hackers 703 Stolen Login Credentials

HEROIC analysts uncovered a stealer log labeled "730 .UA Mail Access," uploaded to a Telegram channel and dated back to February 14, 2026. The file contains 703 records of working email access credentials, each paired with a plaintext password and the URL of the login page it belongs to. The ".UA" tag points to Ukrainian webmail accounts, meaning this log gives whoever holds it direct, ready-to-use access to hundreds of real inboxes.

Why This Is Dangerous

This is not a list of old, hashed, or partially redacted passwords. It is a working set of email logins captured straight from infected devices, complete with the exact URL needed to log in. An attacker doesn't need to crack anything or guess which service a password belongs to. They can open a browser, paste in the credentials, and be inside someone's inbox within seconds. With 703 accounts in one file, that is 703 separate doors an attacker can walk through immediately.

What Was Exposed

• 703 email addresses tied to active mail accounts
• Plaintext passwords stored with no encryption
• Login URLs pinpointing the exact webmail service for each account

Why This Matters

Email inboxes are the master key to almost everything else online. Anyone who gains access can reset passwords for banking, shopping, and social media accounts, intercept two-factor authentication codes, and impersonate the victim to contact their friends, family, or coworkers. If any of these 703 people reused their mail password elsewhere, attackers can also run credential stuffing attacks against other services, turning one exposed inbox into a chain of compromised accounts and, potentially, financial fraud or identity theft.

How This Mail Access Log Was Built

Logs like this one come from infostealer malware that infects a victim's computer, often through pirated software, fake downloads, or malicious email attachments. Once installed, the malware scans the browser for saved logins and autofill data, then bundles everything it finds into a log file, in this case one focused specifically on webmail access. That file is then sold or shared in Telegram channels catering to cybercriminals, where buyers can pick up ready-made access to hundreds of email accounts for the price of a subscription.

Check If You Are Affected

If you use a .UA webmail service or have reused a mail password anywhere else, it is worth finding out now rather than after an attacker gets there first. HEROIC's free breach scanner checks your email address against more than 400 billion leaked records, including stealer logs and mail access dumps like this one, so you can see your exposure and secure your accounts before they are used against you.