Lead Hunter 2020 Data Breach
Data Broker · Lead generation and marketing contact aggregation services · Marketing lead database platform · Global
Lead Hunter Marketing Lead Database Breach: 68M Consumer Records Including Phone & Home Address
Marketing lead database aggregator'
Compilation · 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.
68.7MRecords
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
In March 2020, an unattributable dataset dubbed "Lead Hunter" was found exposed on a publicly facing Elasticsearch server and provided to Have I Been Pwned (via dehashed.com). It contained ~69 million unique email addresses across ~110 million rows, along with names, phone numbers, genders, IP addresses, and physical addresses. Troy Hunt could not attribute it to a specific company; it appears to be publicly scraped web-domain/contact data repurposed as a large spam database (~93% of emails were already known to HIBP). It is best characterized as a scraped/compiled spam database, not a breach of a named entity.
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…
68.7M records analyzed
About Lead Hunter
"Lead Hunter" is the name given to an unattributable dataset, not a confirmed company. It appears to be a large marketing/spam database compiled by scraping publicly available web-domain (WHOIS-style) and contact data.
Why They Hold Your Data
Lead-generation platforms aggregate marketing contact records, emails, phone numbers, company data, and prospecting information for outreach and sales workflows.
Recent Developments
In March 2020, the "Lead Hunter" dataset was found exposed on a publicly facing Elasticsearch server and provided to Have I Been Pwned (via dehashed.com). Troy Hunt could not attribute it to a specific entity; about 93% of the emails were already in HIBP, indicating heavily recycled/scraped data.
Data Points Exposed
6 verified field types
Email Address
Full Name
Gender
IP Address
Phone Number
Physical address High
Breach Impact
The dataset ties names, emails, phone numbers, genders, IP addresses, and physical addresses for ~69 million people, enabling spam, targeted phishing/smishing, SIM-swap targeting, and doxxing. Because it was scraped/compiled from public sources and repurposed as a spam database, affected individuals had no direct relationship to any single "Lead Hunter" entity.
Exploitation & Downstream Threats
• Spam, phishing, and smishing using name/email/phone | • SIM-swap targeting using phone numbers | • Doxxing and physical targeting from exposed addresses | • Identity enrichment from aggregated public data
Principal Risk Advisory
What this means for a principal
A data-broker/identity breach: aggregated identity attributes re-seed broker networks and enrich targeting of the individual. 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.
- 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).
Protect Yourself
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