HIGH SEVERITYCrypto

Coinmama Data Breach

Verified by ObscureIQ Intelligence
Xinf@

6.0Severity
479KRecords
3Data Fields
2017Year

Impact & Downstream Threats

This breach carries high risk due to the nature of exposed data fields and the scale of affected records.

Primary downstream threats:
  • Credential stuffing against reused passwords across other platforms
  • Targeted phishing campaigns using exposed email addresses

Breach Intelligence

EntityCoinmama
OrganizationPrivate Company • Israel
Breach DateAugust 2017
DisclosureAugust 2019
Records Exposed~479K
Attack VectorMisconfiguration
SourceHave I Been Pwned / ObscureIQ intelligence
StatusConfirmed

Executive Summary

In August 2017, the crypto coin brokerage service Coinmama suffered a data breach that impacted 479k subscribers. The breach was discovered in February 2019 with exposed data including email addresses, usernames and passwords stored as MD5 WordPress hashes. The data was provided to HIBP by white hat security researcher and data analyst Adam Davies.

About Coinmama

Cryptocurrency brokerage platform.

Private CompanyIsraelcoinmama.com

Data Points Exposed

Verified fields in the released dataset:
Email addresses
Passwords
Usernames

Dark Web Verification

Status: Confirmed

  • Dataset containing approximately 479K 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.

Change Passwords
Change your Coinmama password immediately and any account sharing similar credentials.
Expect Targeted Phishing
Watch for emails referencing this breach. Verify communications through official channels.
Secure Email & Enable MFA
Email compromise is often the first pivot point. Enable multi-factor authentication.
Monitor Financial Accounts
Watch for unauthorized credit applications and suspicious activity.
Check Your Exposure
ObscureIQ clients: this breach is indexed in your profile.
Non-clients may request a breach impact review.

Frequently Asked Questions

What happened in the Coinmama data breach?▾

In August 2017, Coinmama experienced a data breach that exposed approximately 479K records containing personal information.

What data was exposed?▾

The exposed data includes fields such as email address, password, username.

How many records were affected?▾

Approximately 479K records were affected based on current breach intelligence.

Protect Yourself

Check If You’re Affected

Enter your email to check if your data appears in this breach.

Get Free Breach Alerts

Be the first to know when new breaches are disclosed.

High-Risk? Get an Exposure Audit

Full-spectrum exposure audits for executives and public figures.

Request Consultation

ObscureIQ Advisory

We combine proprietary dark web access with commercial and restricted breach intelligence to verify exposure and assess real-world risk.

If you are:
  • A public-facing individual
  • A high-profile executive
  • A customer of Coinmama
  • Or concerned about credential reuse
Services
AuditsWipesThreat MonitoringTraining
Contact
Phone(855) 763-7273Emailinfo@obscureiq.com

© 2026 ObscureIQ. All Rights Reserved.

Classification Tags

MisconfigurationCryptoEmailPasswords

Powered by the ObscureIQ Breach Intelligence Database

© 2026 ObscureIQ · All Rights Reserved · Data Licensing

Latest from ObscureIQ

Credit

What Is Credit Monitoring? And Do I Want It? (Answer: Not Really)

July 14, 2025
Every time there’s a major data breach, companies scramble to offer “free” credit monitoring. It sounds like a responsible move.…
breach economycredit freezecredit scoreequifaxexperian
Credible Threats

Lock Down Browsers. Wipe Employee Footprints. Win Breach Wars.

September 2, 2025
Lock Down Browsers. Wipe Employee Footprints. Win Breach Wars. Over 80% of security incidents now start in the browser. Chrome.…
brave browserbreachesbrowser exploitbrowserschrome
Analysis

Sextortion Spam

May 10, 2025
Sextortion scams aren’t new, but they remain one of the most effective forms of cyber-enabled fraud. These scams don’t rely…
bitcoindeadlinefeargoogle maps apiransom