BlackHat_Cloud 360 Leak Targets 1,079,319 Users’ Logins

HEROIC analysts identified a large stealer log file, labeled BlackHat_Cloud 360, uploaded to Telegram on 28 June 2025. The file contains 1,079,319 records made up of email addresses, plaintext passwords, and the URLs of the login pages tied to each account, making it one of the larger stealer log dumps HEROIC has tracked from a single upload.

Why the BlackHat_Cloud 360 Leak Is Dangerous

With over a million plaintext credential pairs in one file, this leak gives attackers an enormous, ready-to-use list. There is no password cracking required since every entry is already in plain text, and the matching URLs tell an attacker exactly which website or service each login belongs to. A dataset this size is typically run through automated tools within hours of being posted, testing every credential against as many sites as possible.

What Was Exposed in BlackHat_Cloud 360

• Email addresses
• Plaintext passwords
• URLs of the sites where credentials were entered

Why This Matters for 1,079,319 People

A leak of this scale is a direct feeder for credential stuffing campaigns, where attackers automatically test stolen email and password pairs across banking, retail, and social media platforms in bulk. Anyone whose credentials appear in this file faces real risk of account takeover, identity theft, or financial fraud, especially if they reused the same password across multiple accounts.

How a Stealer Log Leak This Large Happens

Stealer logs are built by infostealer malware that infects a device, usually through a fake download, cracked software, or a malicious email attachment. Once installed, it quietly copies every saved password and autofill entry from the browser, along with the site it belongs to. Individual infections are then aggregated into bulk collections like BlackHat_Cloud 360, where logs from thousands of separate infections get bundled and sold or shared as one large file.

Check If You Are Affected

Given the size of this leak, checking your email address directly is the fastest way to know where you stand. HEROIC's free breach scanner searches a database of more than 400 billion leaked records so you can find out in seconds whether your credentials were part of BlackHat_Cloud 360 or any other breach.