Protect Yourself After the Cinoshi 200 Bonus Breach: 4,004 Affected

HEROIC security analysts discovered the 202305_cinoshi_200_bonus breach, exposing 4,004 records on 16-May-2023 when a Telegram user released a stealer log file assembled by the Cinoshi malware-as-a-service platform. This breech is particularly significant because Cinoshi was a well-known infostealer subscription service used by multiple criminal operators, meaning the 4,004 records in this bonus dump represent a cross-section of victims targeted by organized cybercrime infrastructure. The exposd data includes plaintext passwords, email addresses, and captured login URLs, all ready for immediate criminal exploitation. If you beleive your device may have been infected in early-to-mid 2023, your credentials may be among those in this leak.

Because this leak originates from an organized malware service rather than a single opportunistic attacker, the credentials were likely already validated and distributed to multiple criminal operators before the public Telegram release. Victims face elevated risk because their data has potentially been in active criminal use for years before this public disclosure.

What the 202305_cinoshi_200_bonus Breach Exposed

• Email Addresses: Your email address is the key to account recovery across every platform you use. With it, criminals can bypass passwords entirely by triggering reset flows and intercepting the confirmation messages.
• Plaintext Passwords: Cinoshi malware captured passwords exactly as they were saved in your browser, with no encryption. These credentials are immediately deployable by any criminal who downloaded this Telegram file.
• URLs: Each URL in this dataset pinpoints exactly where a victim's credential was active, allowing criminals to prioritize attacks on high-value targets like banking portals and corporate login pages.

How 202305_cinoshi_200_bonus Credentials Fuel Account Fraud

Credentials from organized malware platforms like Cinoshi are considered premium data in criminal circles because they arrive pre-verified and precisely formatted for automated attack tools. Once criminals load these email and password pairs into credential stuffing software, they can test tens of thousands of login attempts per hour across major websites. A single working credential typically cascades into multiple account takeovers when victims reuse passwords, and attackers who gain email access can then pivot to financial accounts, social media, and workplace systems. Protecting yourself now means changing passwords on every account that shared credentials with a compromised device.

Understanding Stealer Log: The Attack That Collected This Data

The Cinoshi malware-as-a-service platform allowed criminal subscribers to deploy infostealer software without needing technical expertise, dramatically lowering the barrier to credential theft. Once a victim's device was infected, typically through a fake software download or phishing link, the Cinoshi stealer silently extracted every saved password and active session cookie from the browser. The malware also recorded the URLs associated with each credential, creating a complete profile of the victim's online activity. Victims recieved no alert during or after the infection, meaning many are still unaware their credentials were harvested and sold over two years ago.

Check If Your Data Is in the 202305_cinoshi_200_bonus Leak

HEROIC's free scanner includes Cinoshi malware logs and thousands of other stealer log datasets in its database of 400 billion+ compromised records. Visit heroic.com to scan your email address for free and see immediately whether your data was captured in this breach or any other verified leak. Early detection is the most effective tool for preventing credential-based fraud.