WATERCLOUD_NOTIFY 428 Files Leak 2,523 Plaintext Logins

A stealer log batch labeled WATERCLOUD_NOTIFY 428 FILES turned up on Telegram carrying 2,523 plaintext email and password pairs harvested straight from infected devices, dated 06 August 2024. HEROIC analysts logged the file after the 428 individual logs it contains were pulled together and reposted under one name. Anyone can scan your email to see if their address is among them.

Why credentials pulled by malware are dangerous

Unlike a database leak, this data came off real, compromised machines, which means it can include the exact login URL, the working password, and the browser session the victim was using when the malware captured it. That combination lets an attacker log into an account as if they were the original owner, with none of the friction a stolen but unconfirmed password would carry.

What was exposed

• Email addresses tied to accounts that were actively logged into on an infected device.
• Plaintext passwords that work the moment they are tried, with no cracking needed.
• URLs showing exactly which site or service each captured password unlocks.

Why this matters

Because this data comes from a live infection rather than an old database dump, it tends to be current. A password captured this way is far more likely to still be in use than one pulled from a years old breach, which makes the accounts behind these 2,523 records an immediate target.

How a stealer log like this happens

Infostealer malware runs quietly on an infected computer, pulling saved passwords, browser autofill data and login URLs straight out of the browser, then sending everything back to whoever controls the malware. The 428 files in this batch are individual logs from separate infected machines, bundled into a single upload.

Should you check your own exposure now?

The quickest way to know is to scan your email against HEROIC's records. If your address turns up, change the password on that account right away, and do the same for any device you suspect may be infected, since the malware could still be capturing new logins. Check both personal and work email addresses, since stealer logs do not distinguish between the two.