Japanese Internet Users Targeted in 793-Record SharkBaby4 Leak

This time the target was clear from the file name itself, 800x Just Valid full japan Hits by SharkBaby4 uploaded by a Telegram User. Despite the name promising 800, the actual count came to 793 records, all pointing to accounts believed to belong to Japanese internet users.

Why This Is Dangerous

Each of the 793 records includes an email address, a plaintext password, and a URL, so there is nothing standing between the data and misuse. Leaks that target a specific country or region are often more valuable to attackers because they can be aimed at services popular within that population.

What Was Exposed

• 793 total records from 800x Just Valid full japan Hits by SharkBaby4 uploaded by a Telegram User
• Email addresses
• Plaintext passwords
• URLs tied to each account

Why This Matters

When a leak is grouped by country, it becomes easier for criminals to run targeted scams, like fake messages that look like they came from a local bank or delivery service. The 793 people in this leak may recieve phishing attempts crafted specifically to look familiar and trustworthy to them.

How Stealer Logs Work

Files like this one are built from infostealer malware infections and then seperated by region during the sorting process, wich is why a seller can advertise a batch as specifically Japanese. The underlying mechanism is the same everywhere, malware quietly copies saved browser passwords and ships them off before anyone notices.

Check If You Are Affected

No matter what country a leak is grouped by, checking your exposure only takes a moment. HEROIC's free breach scanner searches more than 400 billion leaked records, so you can quickly see if your email is part of this leak or any other and take action right away.