Cit0day 2020.0 Data Breach
ObscureIQ Breach Intelligence
Moderate SeverityWebsite / service breach
Cit0day Credential Dump: 195M Email & Password Pairs from 23,000 Hacked Websites
Credential dump compilation aggregated from 23,000+ hacked websites'
Verified by ObscureIQ Intelligence
45/100Breach Risk Index
17Data Value
25Market Recency
584dSince Breach
Breach Intelligence Summary
Entity: Cit0day · Actor: Unknown · Sources: 7 references
Attack: Scraping / Collection
Profile: Breach Compilation · Aggregated stolen credentials and password pairs · Multi-breach credential corpus · Global
Timeline: Breach (2020-11-04) · Indexed (Dec 01, 2024) · Year (2020.0)
Exposure: 195.4M records · 2 fields: Email Address, Password
Status: Compilation
Executive Summary
Cit0day was a subscription service that sold access to credentials from breached websites. In November 2020, after the service was shut down, a collection of more than 23,000 breached databases was released on hacking forums. It contained about 226.9 million unique email addresses paired with passwords, provided as both hashes and cracked plaintext, and included many legitimate, previously undisclosed breaches. It is an aggregated collection, not a breach of a single organization.
ObscureIQ assessment: Extremely high risk of account takeover, password reuse abuse, and long-tail credential exploitation. Multi-source credential corpora remain dangerous for years because reused passwords persist.
Breach Impact
Cit0day was a subscription service that sold access to credentials from breached websites. In November 2020, after the service was shut down, a collection of more than 23,000 breached databases was released on hacking forums. It contained about 226.9 million unique email addresses paired with passwords, provided as both hashes and cracked plaintext, and included many legitimate, previously undisclosed breaches. It is an aggregated collection, not a breach of a single organization.
About Cit0day
Credential dump compilation aggregated from 23,000+ hacked websites'
Why They Hold Your Data
Multi-breach credential corpora aggregate usernames, emails, passwords, and authentication pairs from many prior incidents into a centralized credential dataset.
Data Points Exposed
2 verified field types
Email Address
Password Critical
Field names are shown in full for clarity and search visibility. Canonical machine keys are emitted only in this page’s structured data.
Exploitation & Downstream Threats
Threat Activity:Critical
Primary downstream threats:
- Credential stuffing against reused passwords across other platforms
- Targeted phishing campaigns using exposed email addresses
Threat vectors:
- Phishing, credential stuffing & account takeover
- Credential stuffing & account takeover
Recommended Actions
If you believe your information may be included:
Change Reused Passwords
Update this account and anywhere you reused the password; use a manager.
Enable MFA Everywhere
Turn on multi-factor authentication on email first, then financial accounts.
Report & Recover
If you spot misuse, start an official recovery plan and report fraud.
Frequently Asked Questions
What happened in the Cit0day breach?▾
Cit0day was a subscription service that sold access to credentials from breached websites. In November 2020, after the service was shut down, a collection of more than 23,000 breached databases was released on hacking forums. It contained about 226.9 million unique email addresses paired with…
What data was exposed?▾
Verified fields include Email Address, Password.
What should I do if I was affected?▾
Change reused passwords, enable MFA, and (if identity or financial data is involved) freeze your credit and monitor your accounts.
Sources & References
Every claim on this page is traceable. This breach draws on:
Breach Index
Breach Index
Cross-source
BreachForums_Official_Index
Cross-source
BreachNet.pw
Cross-source
Dehashed
Cross-source
LeakCheck.net
ObscureIQ Intelligence
ObscureIQ proprietary analysis
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