Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

StockX

Disclosed Aug 8, 20196,840,339 accountsConfirmed

Official notice

In July 2019, the fashion and sneaker trading platform StockX suffered a data breach which was subsequently sold via a dark webmarketplace. The exposed data included 6.8 million unique email addresses, names, physical addresses, purchases and passwords stored as salted MD5 hashes. The data was provided to HIBP by dehashed.com .

What is known

People affected6,840,339 (accounts in the leaked data, per Have I Been Pwned)
DisclosedAug 8, 2019
HappenedMay 14, 2019
AttackNot stated
Data exposedNamesEmailsPasswordsAddressesFinancial
SectorTech · US
StatusConfirmed
Check your emailHave I Been Pwned

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: StockX
Official noticeattorneygeneral.delaware.gov
Notice letter filed with the Delaware DOJ: StockX
Aggregatorhaveibeenpwned.com
Have I Been Pwned: StockX
Official noticemaine.gov
Maine Attorney General breach notice archive: StockX

Notices filed

Residents of DEAug 8, 2019
Delaware DOJ9,439 people
Residents of CAAug 9, 2019
California AGCount not stated
Accounts in the dataAug 10, 2019
Have I Been Pwned6,840,339 people
Residents of MEAug 13, 2019
Maine AG3,803 people
History of this record
source2026-09-25
empty to https://www.maine.gov/ag/sites/maine.gov.ag/files/docs/Data%20breach%20spreadsheet%2012-6-2018%20through%209-14-2020%20REDACTED.xlsxby backfillSource
hibp2026-09-25
empty to StockXby backfillSource
sector2026-09-25
other to techby backfillSource
data_types2026-09-25
["names"] to ["names","emails","passwords","addresses","financial"]by backfillSource
records_basis2026-09-25
empty to hibpby backfillSource
records2026-09-25
empty to 6840339by backfillSource
summary2026-09-25
empty to In July 2019, the fashion and sneaker trading platform StockX suffered a data breach which was subsequently sold via a dark webmarketplace. The exposed data included 6.8 million unique email addresses, names, physical addresses, purchases aby backfillSource
data_types2026-09-25
[] to ["names"]by backfillSource
disclosed2026-09-25
2019-08-09 to 2019-08-08by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

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