The 2.8K Japan: 1,664 Stolen Login Credentials Hit the Dark Web

HEROIC analysts identified this stealer log on May 23, 2026. The breach exposed 1,664 records, with stolen data including email addresses, plaintext passwords, and URLs. The source is identified as 2.8K Japan.

Why This Is Dangerous

The 2.8K Japan stealer log contains credentials stolen from Japanese internet users. With plaintext passwords exposed alongside email addresses and the specific websites targeted, attackers have a complete set of information needed to access affected accounts without any additional work.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (website addresses where credentials were stolen)

Why This Matters

The 1,664 stolen login credentials from Japanese users in this breach can be used in credential stuffing campaigns targeting Japanese email providers, online services, and banking platforms. Victims who share the same password across multiple accounts face the highest risk of account takeover. Access to an email account in particular can enable password resets on virtually any linked service, amplifying the impact of a single stolen credential.

How Stealer Logs Work

Stealer logs are produced by information-stealing malware that infects computers through phishing messages, malicious downloads, or compromised websites. Once installed, the malware collects saved browser passwords and captures credentials as users log into accounts. The stolen data is compiled and shared in private Telegram channels and dark web forums, where criminals can download and use it against victims.

Check If You Are Affected

HEROIC offers a free breach scanner that searches 400 billion records. Search your email address now to see if your credentials appear here or elsewhere. Free, takes seconds.