Adda.io data breach exposes 1.86 million user records
A hacker, 'Blinkers,' uploaded a database containing personal details of over 1.86 million Adda.io users to a hacking forum on November 23, 2025.
Key points
- Data of over 1.86 million users exposed.
- Hacker 'Blinkers' responsible for leaking data.
- Data circulated on a hacking forum on November 23, 2025.
Connected intelligence
Signal brief
Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.
Organization
- Published
- Nov 23, 2025
- Updated
- Jun 25, 2026
- Confidence
- Medium
- Evidence
- 2 sources
Structured assessment
Signal analysis
It helps compare this signal with other published signals without treating the labels as final determinations.
Threat source
Watch exposure paths that could affect data, operations or third-party trust.
Business impact
- Impact area
- Confidentiality
- Likely asset
- User or customer data, Server or cloud data store
Mentioned entities
Quick context
Questions about this signal
What happened in this signal?
A hacker, 'Blinkers,' uploaded a database containing personal details of over 1.86 million Adda.io users to a hacking forum on November 23, 2025. The leaked data includes owner IDs, first and last names, phone numbers, email addresses, and MD5-hashed passwords. The actual breach is believed to have occurred in March 2025.
When was this signal reported?
Shadow Tier lists Nov 23, 2025 as the signal date.
Which organization is connected to this signal?
Adda is the organization connected to this public signal.
Explore AddaWhich impact area is relevant?
This signal is connected to data exposure and breach intelligence based on its reported consequences.
Explore data exposure and breach intelligenceRelated signals
Compare shared topics, actors and incident patterns before opening the full signal.
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