Overblog Alleged Data Exposure
The 2019 Overblog data breach occurred in April 2019 when user databases from Overblog (over-blog.com), a prominent European blogging and content publishing network operated by JFG Networks, were compromised and leaked online.
Exposed Data Types
7- Email addresses
- Usernames
- Passwords
- IP addresses
- Profile photos
- Spoken languages
- Device information
About This Record
What information was compromised in the Overblog incident?
The leaked PostgreSQL database export (jfg-internal-user-1-2019-04-01.sql) contains detailed user profiles and authentication credentials for over 2.9 million registered bloggers. Verified data classes include:
- Account Credentials: Registered email addresses, platform usernames, and password hashes encrypted using the SHA-1 algorithm.
- Technical & Network Identifiers: Registration IP addresses, last connected IP addresses, interface languages, and associated mobile device tokens.
- User Profiles: Avatar image URLs, verification flags, and communication preferences.
How many accounts were affected?
Standardized RFC 5322 ASCII canonical verification confirmed 2,919,422 unique valid email addresses across the platform's user records.
Security advisory & personal identity protection
The exposure of SHA-1 password hashes combined with active IP addresses and usernames creates significant risks of credential stuffing and password cracking attacks. Impacted users should:
- Change passwords on any external services that may have shared the same password.
- Adopt a secure password manager to maintain unique credentials across all web platforms.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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