Zacks 2020 Data Breach
Company · Financial research and analysis · Investment data and advisory services · USA
Zacks Investment Research Breach (2020): 8.9 Million Customer Records Including Passwords & Home Address Exposed
Financial research and data firm.
Confirmed · ObscureIQ Intelligence
Breach Risk Index i
24/100
Lower riskHigher risk
Lower: limited current risk based on data value and recency.
Data Sensitivity i
StandardExposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
8.9MRecords
2020Year
The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.
Crucial data exposed
AddressPhysical address
Breach Summary
Zacks Investment Research, a Chicago-based financial data and analysis firm, suffered a data breach affecting approximately 8.9 million customer records. The breach was first disclosed in December 2022, with Zacks initially reporting that around 820,000 customers were affected by unauthorized access occurring between November 2021 and August 2022. In June 2023, a far larger dataset containing records from nearly 8.8 million Zacks users appeared on a hacking forum. That dataset appeared to originate from a separate, earlier incident, with the most recent records dated May 2020. The attack pathway involved a misconfiguration that allowed direct access to customer data. The exposed data included full names, usernames, email addresses, home addresses, phone numbers, and passwords. The passwords were stored as unsalted SHA-256 hashes, a weak form of protection that makes them relatively easy to crack with modern tools. Zacks described the passwords as "encrypted," but unsalted SHA-256 is not encryption and provides limited security. The combination of contact details and crackable passwords creates serious exposure for affected individuals. No major regulatory action or settlement specific to this breach has been publicly documented. Zacks did acknowledge in later statements that the unauthorized parties had also accessed customer passwords beyond what was initially reported. People whose data was exposed face elevated risks of phishing attacks, investment fraud, and account takeovers, particularly given that Zacks customers are identifiable as active investors, which increases the credibility and targeting precision of financial scams.
Full threat analysis, exploitation vectors, and principal guidance below.
10 additional sections · verified field analysis · defensive doctrine
Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…
8.9M records analyzed
About Zacks
Zacks Investment Research is a Chicago-based financial research and data firm providing investment analysis, stock screening tools, earnings estimate data, and advisory services to retail and institutional investors. The company is private and has operated since 1978 as a provider of proprietary earnings data, analyst ratings, and market intelligence.
Why They Hold Your Data
Investment research and advisory firms collect subscriber identity, contact details, billing records, newsletter subscriptions, and research-consumption behavior tied to financial analysis services.
Recent Developments
Zacks has continued to operate as a financial research platform through a period in which it experienced multiple distinct data security incidents across 2020, 2023, and 2024. The pattern of repeated breaches drew attention from security researchers and media. No major organizational changes beyond the breach response context have been prominently reported.
Data Points Exposed
6 verified field types
Email Address
Full Name
Password High
Phone Number
Physical address High
Username
Breach Impact
Data from Zacks dating to May 2020 surfaced publicly in 2022 and again in broader circulation in 2023, ultimately exposing approximately 8.9 million customer records including email addresses, usernames, passwords, phone numbers, and home addresses. Zacks disclosed a breach affecting 820,000 customers in December 2022, but the subsequently circulated corpus substantially exceeded that figure. The gap between the disclosed scope and the actual dataset drew criticism. No settlement or major regulatory action specific to this incident has been documented.
Exploitation & Downstream Threats
• Credential stuffing against reused passwords across other platforms | • SIM swap attacks where phone numbers are present | • Targeted phishing campaigns using exposed email addresses | • Doxxing risk from physical address exposure
Principal Risk Advisory
What this means for a principal
A financial-institution breach: account, wealth or payment data supports direct fraud and highly credible financial-impersonation scams. For a high-profile principal this is targeting-grade, not merely identity-theft-grade: the combination lets an adversary locate, impersonate, or pressure the principal with little additional work.
What You Should Do
- Treat the home address as exposed: review mail and package handling and physical-security routines, and brief household staff to verify unusual requests.
- Reset any reused passwords and enable MFA on email first, then financial accounts.
- Guard against SIM-swap and vishing: add a carrier port-out PIN and verify any 'support' calls independently.
- Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.
How ObscureIQ Can Help
- Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
- Exposure mapping and footprint neutralization: cross-reference against broker-available data and suppress still-removable elements, prioritizing address and phone, since this record re-seeds broker networks.
- ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
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