DemandScience by Pure Incubation
Disclosed Nov 13, 20241 year ago121,796,165 accountsUnverified
Leak from decommissioned DemandScience system exposes 122 million business contacts
A corpus from B2B data firm DemandScience appeared for sale in early 2024 and was later attributed to a leak from a decommissioned legacy system. It held 122 million unique business email addresses with names, phone numbers, employers, job titles and LinkedIn links.
What is known
| People affected | 121,796,165 (accounts in the leaked data, per Have I Been Pwned) |
|---|---|
| Disclosed | Nov 13, 2024 |
| Happened | Feb 28, 2024 |
| Attack | Exposed data |
| Data exposed | Emails, Employment, Names, Phone numbers, Addresses |
| Sector | Data brokers · US |
| Status | Unverified: not yet confirmed by an official notice, a filing or the organization |
| Check your email | Have I Been Pwned |
Sources
| Source | |
|---|---|
| Have I Been Pwned: DemandScience by Pure Incubationhaveibeenpwned.com · Aggregator | Aggregator |
Notices filed
| Where | Filed | People |
|---|---|---|
| Have I Been Pwnedaccounts in the data | Nov 13, 2024 | 121,796,165 |
| Researchtotal | Nov 13, 2024 |
History of this record
- 2026-09-25 · source_type: aggregator to press · seed source
- 2026-09-25 · country: empty to US · seed source
- 2026-09-25 · sector: tech to data · seed source
- 2026-09-25 · attack: hacking to misconfiguration · seed source
- 2026-09-25 · summary: In early 2024, a large corpus of data from DemandScience (a company owned by Pure Incubation), appeared for sale on a popular hacking forum . Later attributed to a leak from a decommissioned legacy system, the breach contained extensive dat to A corpus from B2B data firm DemandScience appeared for sale in early 2024 and was later attributed to a leak from a decommissioned legacy system. It held 122 million unique business email addresses with names, phone numbers, employers, job · seed source
- 2026-09-25 · title: empty to Leak from decommissioned DemandScience system exposes 122 million business contacts · seed source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Have I Been Pwned). Record counts are as reported. Not legal advice.