Major CLOUDCOSMIC Leak: 1,963 Users’ Data on Dark Web

HEROIC researchers found 1,963 records on February 18, 2023 from the CLOUDCOSMIC stealer log distributed through a Telegram channel.

Why This Stealer Log Is Dangerous

Stealer logs like CLOUDCOSMIC are created by infostealer malware that harvests credentials directly from infected devices. Because the passwords are captured in plaintext, attackers do not need to crack anything before attempting account takeovers, making this type of leak one of the fastest routes to mass credential abuse.

What Was Exposed in CLOUDCOSMIC

• Email addresses
• Plaintext passwords
• Login URLs and API host endpoints
• Session artifacts tied to infected browsers
• Service associations indicating where credentials work

Why This Matters

Even a 1,963-record drop can unlock banking portals, corporate SaaS tools, email inboxes, and cloud dashboards when users reuse passwords. A single matched credential can cascade into business email compromise, financial fraud, or deeper intrusions across an organization.

How a Stealer Log Like CLOUDCOSMIC Works

Infostealer malware is delivered through cracked software, phishing attachments, or malicious ads. Once running, it silently pulls saved browser passwords, cookies, autofill data, and crypto wallet files, then packages everything into a log that is uploaded to Telegram channels and dark web markets for resale.

Check If You Are Affected

HEROIC scans 400B+ exposed records to show you exactly where your credentials appear. Run a free scan to see if your email or password surfaced in the CLOUDCOSMIC leak and act before attackers do.