The Valialid Hotmails Leak Gives Attackers a Path to Account Takeover

HEROIC analysts found a combolist titled valialid hotmails moon_supp1 1 uploaded to Telegram on May 2, 2025. The file contains 931 records of Hotmail-style email addresses paired with plaintext passwords and associated URLs, described by the uploader as verified, working logins. Why This Is Dangerous: A file labeled "valid" is more dangerous than a random combolist because the credentials have reportedly already been checked and confirmed to work. That means an attacker doesn't need to filter out dead accounts, all 931 records are ready to use immediately, with passwords sitting in plaintext. What Was Exposed: The valialid hotmails file lists three fields per record. - Hotmail-style email addresses - Plaintext passwords - URLs tied to the login Why This Matters: Because these credentials are marketed as pre-verified, an attacker has everything needed to log straight into an inbox, reset passwords on connected accounts, and impersonate the real owner. If the password was reused anywhere else, that exposure spreads through credential stuffing to banking, shopping, or social media logins too, turning one leaked webmail account into a full account takeover. How a Combolist Like This Works: "Valid" combolists are created by taking a raw list of stolen credentials and running an automated checker against the login page to confirm which pairs still work, discarding the rest. This extra verification step makes the remaining list smaller but far more valuable to buyers on Telegram, since every entry has a real chance of granting access. Check If You Are Affected: If you use a Hotmail address, check it now with HEROIC's free breach scanner, which searches more than 400 billion breached records. If your account appears, change your password immediately, and everywhere else you've used it.