Naz.API 2023.0 Data Breach
ObscureIQ Breach Intelligence
Moderate SeverityWebsite / service breach
Infostealer Malware Credential Logs Dataset 2: 71 Million Stolen Credentials from Infected Devices
Credential theft and device data exfiltration.
Verified by ObscureIQ Intelligence
49/100Breach Risk Index
20Data Value
25Market Recency
541dSince Breach
Breach Intelligence Summary
Entity: Naz.API · Actor: Unknown (infostealer operators) · Sources: 2 references
Attack: Malware / Infostealer
Profile: Malware / Infostealer · Credential theft and device data exfiltration · Aggregated infostealer log dataset · Global
Timeline: Breach (2025-01-01) · Indexed (Jan 13, 2025) · Year (2023.0)
Exposure: Undisclosed records · 2 fields: Email Address, Password
Status: Compilation
Executive Summary
Naz.API is a corpus of stealer logs and credential-stuffing lists posted to a hacking forum in September 2023, containing 71 million unique email addresses and about 100 million unique plaintext passwords, often alongside the service each credential was used for. Roughly a third of the credentials had not been seen before.
ObscureIQ assessment: Because it mixes stealer logs and cred-stuffing lists, presence does not by itself prove infection; the mitigation is unique passwords and MFA.
Breach Impact
The plaintext passwords tied to specific services are directly usable for account takeover; presence may reflect either infostealer infection or credential-stuffing collection.
About Naz.API
Naz.API is a large aggregated dataset of stealer logs and credential-stuffing lists, not a breach of a single organization.
Why They Hold Your Data
Time-bounded stealer log dumps typically package credentials, session artifacts, device metadata, and browser-extracted data collected from recently infected systems into a current snapshot. Their workflows emphasize recent collection, bulk consolidation, and easy downstream reuse.
Recent Developments
Posted to a hacking forum in September 2023 and loaded into breach-notification services in January 2024, it became a widely referenced credential corpus.
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:High
Primary downstream threats:
Threat vectors:
- Phishing, credential stuffing & account takeover
- Credential stuffing & account takeover
Threat Actor: Unknown (infostealer operators)
Unknown (infostealer operators)
Malware / Infostealer
Attribution and method are based on available breach intelligence. Reported attack vector: Malware / Infostealer.
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 Naz.API breach?▾
Naz.API is a corpus of stealer logs and credential-stuffing lists posted to a hacking forum in September 2023, containing 71 million unique email addresses and about 100 million unique plaintext passwords, often alongside the service each credential was used for. Roughly a third of the credentials…
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
ObscureIQ Intelligence
ObscureIQ proprietary analysis
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