The HelloKittyCloud 100 Stealer Log Means Someone May Have Your Login

HEROIC analysts discovered the HelloKittyCloud 100 dataset through ongoing monitoring of Telegram channels where stolen credential files are shared publicly. On October 29, 2023, an anonymous user posted a stealer log containing 1,247 records. Each entry included an email address, a plaintext password, and a URL tied to the endpoint or service where the data was captured. The file name and structure indicate it is part of a series of logs generated by infostealer malware, packaged and shared freely on Telegram as a demonstration or promotional release by the operator.

Why the HelloKittyCloud 100 Leak Puts Your Accounts at Risk Right Now

The most alarming detail about this breach is that every password in the file is in plaintext. There is no encryption to break, no hash to crack. Anyone who downloads the HelloKittyCloud 100 log can immediately pair an email address with its password and attempt to log in to email accounts, social media, online banking, or any service where that person might reuse the same password. With automated tools, an attacker can test all 1,247 credential pairs across dozens of platforms in a matter of hours. The presence of associated URLs also tells attackers exactly which services were actively being used by the victims.

What Was Exposed in the HelloKittyCloud 100 Dump

• Email addresses
• Plaintext passwords (immediately usable, no cracking required)
• URLs linked to the compromised services or endpoints

Why This Matters: From Stolen Password to Account Takeover

Credential stuffing is one of the most common attack techniques in use today, and stealer logs like HelloKittyCloud 100 are exactly the fuel that powers it. Once an attacker has a valid email and password, they do not stop at one account. They test that combination everywhere. If the same password works on your email, that attacker can then reset passwords on every other account tied to that inbox. This can lead to financial fraud, identity theft, and the kind of account takeover that is very difficult to recover from. Even 1,247 records represents 1,247 real people whose digital lives are at risk.

How HelloKittyCloud Stealer Logs Are Created and Distributed

HelloKittyCloud is a name associated with a collection of infostealer malware logs distributed through Telegram. Infostealer malware infects a person's device silently, usually through a phishing email, a fake software crack, or a malicious browser extension. Once running, it harvests saved passwords from browsers like Chrome and Firefox, captures login sessions, and records the URLs of sites the victim visits. All of that data gets bundled into a log file and sent to the attacker. Those logs are then shared on Telegram, sometimes as free samples to atract buyers, sometimes as outright giveaways. The victms rarely know their passwords have been stolen until they discover unauthorized access to their accounts.

Check If You Were Included in the HelloKittyCloud 100 Breach

HEROIC's free breach scanner searches across more than 400 billion records, including stealer logs like HelloKittyCloud 100. Enter your email address to find out if your credentials appear in this file or in any of the thousands of other breaches tracked in our database. If your data is there, you will know immediately and can take steps to secure your accounts before someone else does. Search now at HEROIC's breach scanner, it takes less than a minute.