4KMILES 2019 Data Breach

4KMILES E-Commerce Marketplace Services Breach (2019): 11.3 Million Amazon Merchant Customer Records Including Home Address Exposed

Company · Digital commerce and Amazon marketplace services · Amazon marketplace services provider · Global

4KMILES E-Commerce Marketplace Services Breach (2019): 11.3 Million Amazon Merchant Customer Records Including Home Address Exposed

digital commerce and Amazon marketplace services provider

Confirmed · ObscureIQ Intelligence
Breach Risk Index i
34/100
Lower riskHigher risk
Moderate: notable exposure with meaningful misuse potential.
Data Sensitivity i
Standard
Exposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
11.3MRecords
2019Year

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
Classification Tags
Database ExposureRetail & CommerceE-commerceCustomer Indirect2019

Breach Summary

In October 2019, Amazon-partner SaaS provider 4KMILES suffered a data breach exposing about 11.3 million records (including at least 9.4 million distinct Amazon shoppers). Exposed data included names, email addresses, physical/mailing addresses, usernames, phone numbers, website activity, and hashed passwords. Some secondary sources additionally claimed Social Security information, which is not independently confirmed.

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…

11.3M records analyzed

About 4KMILES

4KMILES was a SaaS provider and Amazon official partner offering tools to support Amazon marketplace sellers and shoppers.

Why They Hold Your Data

Amazon marketplace service providers usually handle merchant contact records, account credentials, store performance data, order and inventory information, payment or billing details, and operational files needed to run seller accounts. Their workflows generate this data through marketplace onboarding, store management, advertising support, logistics coordination, and account optimization.

Recent Developments

The breached data circulated publicly; a large share of affected records related to Amazon shoppers.

Data Points Exposed

3 verified field types
Email Address
Full Name
Physical address High

Breach Impact

The name/address/phone/email set supports identity profiling, spam, and phishing; if the reported SSN element were confirmed, exposure would rise to serious identity-theft risk.

Exploitation & Downstream Threats

• Targeted phishing campaigns using exposed email addresses | • Doxxing risk from physical address exposure

Principal Risk Advisory

What this means for a principal

A consumer-service breach: contact and account data supports phishing, account takeover and profile enrichment. 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

  1. Treat the home address as exposed: review mail and package handling and physical-security routines, and brief household staff to verify unusual requests.
  2. Reset any reused passwords and enable MFA on email first, then financial accounts.
  3. Guard against SIM-swap and vishing: add a carrier port-out PIN and verify any 'support' calls independently.
  4. Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.

How ObscureIQ Can Help

  1. Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
  2. 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.
  3. ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).

Protect Yourself

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