HEROIC Found Galiciajewishmuseum.org in Private Telegram Channels

HEROIC analysts identified this stealer log on 10-Jun-2026. The breach exposed 1,675 records, with stolen data including email addresses, plaintext passwords, and URLs. The source is identified as galiciajewishmuseum.org, the domain of the Galicia Jewish Museum in Krakow, Poland.

Why This Is Dangerous

This stealer log includes 1,675 plaintext passwords alongside the email addresses and URLs they belong to. Donors, volunteers, staff, and newsletter subscribers associated with the Galicia Jewish Museum may have their credentials exposed. Because stealer logs capture credentials from all saved browser passwords, not just those for a single site, victims often have many more accounts at risk than the breach source might imply.

What Was Exposed

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

Why This Matters

Credential theft from nonprofit and cultural organizations is increasingly common. Attackers use stolen data to access donation platforms, impersonate communications from trusted institutions, or simply test the credentials against commonly used services. Anyone whose email and password appear in this log risks account takeover, financial fraud, and identity theft, regardless of their connection to the organization.

How Stealer Logs Work

Stealer malware installs silently on a device and begins harvesting browser-saved credentials immediately. It captures the username, password, and web address for each saved account and transmits the data to the attacker. The attacker packages these records into a log file and shares it in private Telegram groups, where criminals can download and use the data to attempt unauthorized logins across the web.

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.