People search Paycor data breach timeline because the brand sits on billions of accounts, credentials, and cloud workloads. BreachHistory indexes 1 Paycor-linked incident. This page maps every attested event through 2026 with internal links to canonical records.
Why Paycor breach history matters
Paycor operates in Finance (United States). Across indexed rows, recurring themes include zero-day exploitation and malware. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2023 — MOVEit Transfer (CVE-2023-34362) compromise; CL0P
Cataloged incident. Paycor, a payroll and workforce HCM vendor, was swept into the global May–June 2023 MOVEit Transfer mass-exploitation campaign attributed to CL0P. Client notification letters (e.g., Neste US distributed via state attorney-general repositories, and Infotech notice in Maine records) stated that exploitation of CVE-2023-34362 against Paycor’s MOVEit instances could have exposed files in transit containing employee name, date of birth, and Social Security number-class data for downstream employer populations. Totals va Exposed categories include Employer payroll files in MOVEit pipelines—commonly name, DOB, SSN in cited templates. No attested victim count is published for this row yet. See the paycor-moveit2023 and canonical BreachHistory entry.
Patterns and analysis
- Zero-day exploitation and malware — appears across multiple Paycor catalog entries; prioritize controls that address this class of failure.
- Record-count hygiene — BreachHistory indexes actor-cited figures separately from company-confirmed totals; read each row's technicalWriteup before treating counts as fact.
- 2026 monitoring — New disclosures roll into this timeline as they are verified or labeled unverified per catalog policy.
What to do if you may be affected
- Step 1: Enable phishing-resistant MFA on every account tied to this brand.
- Step 2: Use unique passwords and a password manager—breach rows often involve credential reuse.
- Step 3: Monitor official company breach notices and regulator filings, not dark-web downloads.
- Step 4: Bookmark the Paycor company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/paycor · Latest: paycor-moveit2023.
Sources: BreachHistory catalog (1 row for Paycor), company and regulator disclosures cited in individual breach records.