Zacks Data Breach
Status: Confirmed
Breach Intelligence Summary
Entity: Zacks · Actor: Unknown · Source: Have I Been Pwned / ObscureIQ intelligence
Attack: Data Exfiltration via Under investigation
Timeline: Breach (Jun, 2024) · Reported (Feb, 2025) · Leak (2/12/25)
Exposure: 12M+ records · Email, IP addresses, Names, Passwords, Phone numbers, Physical addresses, Usernames
Status: Confirmed · Risk: Moderate (Account takeover + Phishing / SIM swap)
Summary
In June 2024 the investment research company Zacks was allegedly breached and data was later published to a popular hacking forum. This comes after a separate Zacks data breach confirmed by the organisation in 2023 with the subsequent breach disclosing millions of additional records representing a superset of data from the first incident. The 2024 breach included 12M unique email addresses along with IP and physical addresses names usernames, phone numbers and unsalted SHA-256 password hashes. Zacks did not respond to multiple attempts to contact them about the incident.
About Zacks
Zacks 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 Zacks 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
3–5 years
Phone numbers and addresses change over time but remain valid long enough for sustained exploitation campaigns.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 12M+ 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 Zacks accounts or services
- Credential stuffing against accounts sharing the same password
- SIM-swap attempts where phone numbers are present
- Physical mail scams and address-based identity verification fraud
- 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.
Zacks account updates
Password reset requests
Verify directly through official channels.
Email compromise is often the first pivot point.
Frequently Asked Questions
In Jun, 2024, Zacks experienced a data breach that resulted in the exposure of approximately 12M+ records containing personal information.
The exposed data includes Email, IP addresses, Names, Passwords, Phone numbers, Physical addresses, Usernames.
Approximately 12M+ 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 Zacks, enable multi-factor authentication on email and financial accounts, and monitor for suspicious activity.
Protect Yourself
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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 Zacks
- Or simply concerned about credential reuse
We can confirm whether your information is circulating and evaluate downstream threat vectors.