The FASTCLOUDD Leak: 3,697 Passwords Exposed. Yours Might Be One.

HEROIC found the FASTCLOUDD breach on December 25, 2022. The incident exposed 3,697 records containing email addresses, plaintext passwords, and URLs from a stealer log targeting United States accounts.

Why the FASTCLOUDD Breach Is Dangerous

Uploaded to a public Telegram channel on December 25, 2022, the FASTCLOUDD stealer log places 3,697 complete credential sets in the open, accessible to any threat actor who encountered the post. Each record includes an email address, a plaintext password, and the URL of the targeted account, providing a ready-made attack kit that bypasses the need for any password cracking. Distribution through Telegram ensures rapid spread across repost networks, so the number of actors who can begin fradulent access attempts grows immediatly after the initial upload.

What Was Exposed in the FASTCLOUDD Leak

• Email addresses
• Plaintext passwords
• URLs (account login pages and API hosts)

Why This FASTCLOUDD Data Puts You at Risk

With plaintext passwords paired directly with account URLs, attackers can test every exposed credential against the exact platform it was stolen from without guesswork. API host URLs in the dataset indicate that some captured sessions involved programmatic or developer access, expanding the potential impact beyond standard user accounts to backend systems. Any password reused elswhere compounds the risk, as one exposed credential can cascade into account takeovers across email, banking, social media, and other services, creating a chain of identiy damage difficult to stop once started.

How Stealer Log Breaches Work

Stealer log breaches occur when infostealer malware installs on a device through phishing emails, fake software downloads, or trojanized browser extensions. The malware automaticaly captures login credentials as they are entered and records the associated URL, transmitting data to attacker-controlled servers in real time. Log files are then bundled and distributed on Telegram channels and dark web markets where buyers quickly deploy them in credential stuffing campaigns.

Check If Your Data Was Exposed

HEROIC operates one of the world's largest breach databases, covering more than 400 billion leaked records. Use HEROIC's free breach scanner to check if your email address or credentials appeared in the FASTCLOUDD leak or thousands of other breaches in our database.