The nugget3_microsoft Leak Could Unlock More Than Just Email

HEROIC analysts identified a combolist labeled nugget3_microsoft that a Telegram user uploaded on 25-Apr-2026. The file contains 334 records pairing email addresses with plaintext passwords, along with the URLs of the sites those credentials unlock, with naming that suggests a focus on Microsoft account logins. | WHY THIS IS DANGEROUS: A Microsoft account often acts as a master key, it can be tied to email, Office documents, OneDrive files, and even device sign-in. Because these passwords are plaintext and matched to a specific URL, an attacker can go straight to the real login page and sign in immediately, no cracking required. | WHAT WAS EXPOSED: Email addresses; plaintext passwords; URLs identifying which site each credential unlocks. | WHY THIS MATTERS: If a Microsoft account is compromised, an attacker can often reset passwords on other services linked to that same email address, turning one exposed credential into access across multiple accounts. For the 334 people in this file, reused passwords elsewhere raise the risk of credential stuffing, account takeover, financial fraud, and identity theft. | HOW COMBOLISTS WORK: A combolist is a compiled file of email or username and password pairs, often assembled from stolen-credential sources tied to a specific platform or service, as the naming here suggests, then shared or sold on Telegram channels and dark web forums. Combolists built around a single service like Microsoft are attractive to attackers because they can target one type of account with automated tools. | CHECK IF YOU ARE AFFECTED: If you want to know whether your email appears in this combolist or any other leaked dataset, HEROIC's free breach scanner checks your information against a database of more than 400 billion leaked records. Run a free scan to see what may be exposed and what to change right away.