If You Reuse Passwords, the Fidnet.com Leak Should Worry You

HEROIC analysts identified this stealer log on 10-Jun-2026. The breach exposed 4,731 records, with stolen data including email addresses, plaintext passwords, and URLs. The source is identified as fidnet.com, the domain of Fidnet Communications, a regional internet service provider.

Why This Is Dangerous

Stealer logs are especially dangerous for anyone who reuses passwords. This log contains 4,731 plaintext passwords paired with the exact websites where they were used, giving attackers a precise map of each victim's online activity. Credential stuffing tools can automatically test these pairs against banking sites, email providers, and social platforms in seconds, with no manual effort required from the attacker.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (the specific websites where credentials were active)

Why This Matters

ISP customers often use their provider email as their primary account for important services. A compromised ISP email address can be used to intercept communications, reset passwords on other platforms, and impersonate the account holder. The 4,731 exposed records represent thousands of individuals who may be at risk of account takeover and financial fraud right now.

How Stealer Logs Work

Stealer malware is software that hides on an infected computer and reads the passwords stored by the web browser. Every time a user saves a login, the malware captures the username, the password, and the site it belongs to. This information is transmitted silently to the attacker and compiled into a log. That log is then shared on Telegram with other criminals who can use it immediately.

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.