How Malware Led to 1,197,116 Stolen Logins in HolyCloud 156

In June 2026, HEROIC tracked the distribution of "HolyCloud Private 156," the 156th numbered release from the HolyCloud stealer log operation, shared on Telegram. This release alone contains 1,197,116 compromised credentials harvested by infostealer malware, each record storing a plaintext password alongside the victim's email address and the URL where the credential was captured.

Over a Million Passwords in Plaintext

Every single password in HolyCloud Private 156 exists in readable plaintext. No encryption, no hashing, no protection of any kind. When a data set this large—nearly 1.2 million records—is distributed with zero-effort exploitation, the potential for mass account compromise is extraordinary. Automated attack tools can ingest and begin testing this volume of credentials against live services in under an hour.

What Was Exposed

• Email Addresses — over 1.1 million accounts spanning every major email provider
• Plaintext Passwords — original credentials as stored in victims' browsers
• URLs — the exact websites and services tied to each compromised credential

Credential Stuffing at Industrial Scale

With 1,197,116 email-password pairs, this dump enables credential stuffing at an industrial scale. Attackers load the full list into automated tools that cycle through login pages for major email providers, financial institutions, e-commerce platforms, and enterprise applications. Statistical models suggest that even a conservative success rate yields thousands of compromised accounts from a list this size. Password reuse is the key vulnerability—victims who use the same password across multiple services hand attackers the keys to their entire digital lives.

The HolyCloud Operation: Malware to Market

HolyCloud operates as a systematic credential harvesting pipeline. The operation deploys infostealer malware—likely through phishing campaigns, software supply chain compromises, and malicious advertising—to infect thousands of devices globally. Each infected machine yields a complete set of saved browser credentials, session cookies, and sometimes cryptocurrency wallet data. This raw data is processed, deduplicated, and organized into numbered releases. Private 156 represents just one installment in an ongoing series, with each release containing roughly a million records drawn from newly infected devices.

Check If Your Credentials Were Exposed

A dump of 1,197,116 records means a vast number of individuals are affected. Determine your exposure by running your email address through HEROIC's breach scanner, which indexes more than 400 billion compromised records. In seconds, you will know if your credentials were captured in HolyCloud Private 156 or any other known breach, enabling you to reset passwords and enable stronger authentication before your accounts are targeted.