The HESOYAM CLOUD Breach Happened Months Ago. The Data Just Went Public.

Security analysts found a stealer log file uploaded to a public Telegram channel on July 19, 2025 that contained 37,194 compromised records tied to the HESOYAM CLOUD dataset. The data included email addresses, plaintext passwords, and URLs collected from infected devices. Stealer logs like this one are built by malware running silently on a victims computer, collecting everything typed or stored before sending it off to an attacker. By the time the file appeared on Telegram, those credentials had already been sitting in someone elses hands for an unknown period of time.

Why This Is Dangerous

Attackers who get hold of this kind of data do not waste time. With 37,194 plaintext passwords and matching email addresses, they can run automated login attempts across dozens of popular services in a matter of hours. If you reused a password from a breached account on your bank, your email, or a work system, an attacker can walk right in without any hacking required. The URLs in the dataset tell them exactly which sites you were logged into, so they know exactly where to try first. Fraud, account lockouts, and identity theft can all follow within days of a log like this going public.

What Was Exposed in the HESOYAM CLOUD Stealer Log

• Email addresses
• Plaintext passwords (unencrypted, ready to use)
• URLs showing which sites and services were accessed
• Endpoint and API host data

Why This Matters

Most people use the same password in more than one place. That habit is exactly what makes breaches like this so damaging. A single leaked password can unlock your email, which can then be used to reset every other account you own. Attackers use stolen credentials for account takeovers, to commit finantial fraud, and to sell access to other criminals. Even if HESOYAM CLOUD is not a service you recognize, your credentials may have been captured by the same malware and bundled into this dataset without your knowledge.

How Stealer Logs Work

A stealer log is created by a type of malware called an infostealer. It infects your device, usually through a malicious download, a fake software crack, or a phishing link. Once installed, it runs quietly in the background and harvests saved passwords from your browser, cookies, autofill data, and anything you type into login forms. All of that data gets packaged into a log file and sent back to the attacker. The attacker then shares or sells the log, often through channels on Telegram where thousands of people can download it for free or for a small fee.

Check If You Are Affected

HEROIC's free scanner checks your email address against over 400 billion compromised records, including stealer logs like this one. If your credentials appear in a known breach, you will know immediately so you can change your passwords and secure your accounts before attackers get there first. Run a free scan at HEROIC to see if your data has been exposed.