Impact & Downstream Threats
This breach carries high risk due to the nature of exposed data fields and the scale of affected records.
- Identity verification bypass using name + date of birth combination
- SIM swap attacks where phone numbers are present
- Targeted phishing campaigns using exposed email addresses
- Doxxing risk from physical address exposure
Breach Intelligence
Executive Summary
In June 2019, the library of Vienna (Wiener Büchereien) suffered a data breach. The compromised data included 224k unique email addresses, names, physical addresses, phone numbers and dates of birth. The breached data was subsequently posted to Twitter by the alleged perpetrator of the breach.
About Wiener Büchereien
Public library system in Vienna.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 224K records identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Recommended Actions
⚠️ Do not assume this is low sensitivity.
Non-clients may request a breach impact review.
Frequently Asked Questions
In June 2019, Wiener Büchereien experienced a data breach that exposed approximately 224K records containing personal information.
The exposed data includes fields such as date of birth, email address, full name, phone number, physical address.
Approximately 224K records were affected based on current breach intelligence.
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ObscureIQ Advisory
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- A public-facing individual
- A high-profile executive
- A customer of Wiener Büchereien
- Or concerned about credential reuse
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