Catho Data Breach
Status: Confirmed
Breach Intelligence Summary
Entity: Catho · Actor: Unknown · Source: Have I Been Pwned / ObscureIQ intelligence
Attack: Data Exfiltration via Under investigation
Timeline: Breach (Mar, 2020) · Reported (Aug, 2020) · Leak (8/18/20)
Exposure: 1.2M+ records · Email, Names, Passwords, Usernames
Status: Confirmed · Risk: Moderate (Account takeover)
Summary
In approximately March 2020 the Brazilian recruitment website Catho was compromised and subsequently appeared alongside 20 other breached websites listed for sale on a dark web marketplace. The breach included almost 11 million records with 1.2 million unique email addresses. Names usernames and plain text passwords were also exposed. The data was provided to HIBP by breachbase.pw.
About Catho
Catho is the organization affected by this breach. User data may have been generated through account creation, service usage, or business operations.
If you have interacted with Catho in any capacity, your data may be included in this breach.
Threat Actor: Unknown
The threat actor responsible for this breach has not been publicly identified or confirmed at this time.
- Under investigation
Breach Exploitation Status
Moderate
Status
Detected
Detected
Possible
Unknown
Unknown
1–3 years
Email addresses and usernames persist but credentials may rotate. Phishing risk remains elevated during this window.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 1.2M+ records has been identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Impact
This breach carries moderate risk due to the nature of exposed data fields and the scale of affected records.
- Targeted phishing referencing Catho accounts or services
- Credential stuffing against accounts sharing the same password
- Data broker enrichment and resale
Recommendations for Impacted Individuals
If you believe your information may be included:
Non-clients may request a breach impact review.
Catho account updates
Password reset requests
Verify directly through official channels.
Email compromise is often the first pivot point.
Frequently Asked Questions
In Mar, 2020, Catho experienced a data breach that resulted in the exposure of approximately 1.2M+ records containing personal information.
The exposed data includes Email, Names, Passwords, Usernames.
Approximately 1.2M+ records were affected based on current breach intelligence.
Yes. This breach is treated as confirmed based on data observed in breach intelligence platforms.
Data circulation has been detected across breach-sharing channels. Downstream exploitation risk exists based on the nature of the exposed fields.
Rotate passwords associated with Catho, enable multi-factor authentication on email and financial accounts, and monitor for suspicious activity.
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Corporate Accountability
Organizations that collect personal data have a duty to implement reasonable safeguards and to notify affected individuals when breaches occur.
Scope assessments may evolve as investigations continue. Users should not rely solely on early estimates when making risk decisions.
ObscureIQ Advisory
We combine proprietary dark web access with commercial and restricted breach intelligence to verify exposure and assess real-world risk.
- A public-facing individual
- A high-profile executive
- A customer of Catho
- Or simply concerned about credential reuse
We can confirm whether your information is circulating and evaluate downstream threat vectors.