StockX 2019 Data Breach
ObscureIQ Breach Intelligence
Low SeverityWebsite / service breach
StockX Sneaker & Collectibles Resale Platform Breach (2019): 6.8 Million Customer Records Including Passwords & Purchase History Exposed
Marketplace for sneakers and collectibles.
Verified by ObscureIQ Intelligence
23/100Breach Risk Index
13Data Value
10Market Recency
2524dSince Breach
Breach Intelligence Summary
Entity: StockX · Actor: Unknown · Sources: 8 references
Attack: Unknown
Profile: Platform · Resale marketplace for goods · Transaction-based marketplace · Global
Timeline: Breach (2019-07-26) · Indexed (Aug 10, 2019) · Year (2019)
Exposure: 6.8M records · 6 fields: Email Address, Full Name, Password, Physical Address, Transaction History, Username
Status: Confirmed
Executive Summary
In May 2019, an unauthorized third party accessed the cloud environment of sneaker/collectibles resale platform StockX, exposing ~6.8 million customer records including email addresses, names, physical addresses, purchase history, usernames, and salted MD5 password hashes. StockX initially issued a mass password reset framed as a "system update," which was later revealed to be a response to the breach; the data was subsequently sold on the dark web. A class-action lawsuit was later settled. The intrusion method was not definitively established.
ObscureIQ assessment: High risk of phishing, account takeover, fraud, and affluent-customer targeting. Transaction data can also reveal spending patterns and collectible or sneaker ownership.
Breach Impact
The exposure of emails, names, addresses, purchase history, usernames, and salted MD5 passwords for 6.8 million customers enables credential-stuffing, targeted phishing, and doxxing; purchase history from a high-value resale platform can also reveal affluent buying patterns for targeting. The initial "system update" framing delayed user awareness.
About StockX
StockX is a large online resale marketplace for sneakers, streetwear, and collectibles, known for authenticating high-demand limited items. It maintains customer account, contact, purchase, and payment-adjacent records.
Why They Hold Your Data
Resale marketplaces collect buyer and seller identity, addresses, payment-adjacent records, transaction histories, device data, and item-specific trading activity across high-value commerce workflows.
Recent Developments
In May 2019, an unauthorized third party accessed StockX's cloud environment. StockX initially prompted a mass password reset framed as a "system update," but it was later revealed to be a breach; the data was sold on the dark web. StockX faced a class-action lawsuit that was later settled.
Data Points Exposed
6 verified field types
Email Address
Full Name High
Password Critical
Physical Address High
Transaction History High
Username
Field names are shown in full for clarity and search visibility. Canonical machine keys are emitted only in this page’s structured data.
Exploitation & Downstream Threats
Threat Activity:High
Primary downstream threats:
- Credential stuffing against reused passwords (salted MD5)
- Targeted phishing using exposed emails
- Doxxing and physical targeting from exposed addresses
- Affluent-buyer targeting via purchase history
Threat vectors:
- Credential stuffing & account takeover
- Password reuse exploitation
- Phishing & social engineering
- Home targeting & doxxing
Recommended Actions
If you believe your information may be included:
Change Reused Passwords
Update this account and anywhere you reused the password; use a manager.
Enable MFA Everywhere
Turn on multi-factor authentication on email first, then financial accounts.
Report & Recover
If you spot misuse, start an official recovery plan and report fraud.
Frequently Asked Questions
What happened in the StockX breach?▾
In May 2019, an unauthorized third party accessed the cloud environment of sneaker/collectibles resale platform StockX, exposing ~6.8 million customer records including email addresses, names, physical addresses, purchase history, usernames, and salted MD5 password hashes. StockX initially issued a…
What data was exposed?▾
Verified fields include Email Address, Full Name, Password, Physical Address, Transaction History, Username.
What should I do if I was affected?▾
Change reused passwords, enable MFA, and (if identity or financial data is involved) freeze your credit and monitor your accounts.
Sources & References
Every claim on this page is traceable. This breach draws on:
Breach Index
Breach Index
Cross-source
9ghz
Cross-source
BreachForums_Official_Index
Cross-source
Dehashed
Cross-source
Keeper
Cross-source
leakfind
ObscureIQ Intelligence
ObscureIQ proprietary analysis
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