BreachCensus

Parker-Hannifin Corporation

ManufacturingUnited States of America

Parker-Hannifin Corporation is a manufacturing organisation in Washington. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register and the Washington State Attorney General breach-notification register with 1 confirmed incident; the most recent notice was filed on May 12, 2022.

Headquarters
Cleveland, United States
Employees
On file, but no reporting date recorded
ISIN
US7010941042
LEI
5493002CONDB4N2HKI23
Wikidata
Q1470619

Data as of September 6, 2026.

Confirmed incident

Filed in WA, CA and MA — Unauthorized Access/Disclosure

The same incident was filed separately with 3 jurisdictions within a few days of each other (WA, CA and MA) — shown here as one incident.

Occurred
March 11, 2022
Disclosed
May 12, 2022

Timeline

  1. May 12, 2022
    Reported to regulator Regulator

    WA AG breach notification: 4,597 Washington residents affected

    source
  2. May 12, 2022
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  3. May 12, 2022
    Reported to regulator Regulator

    MA AG breach notification: 1,310 Massachusetts residents affected

    source

Litigation

  • Possible litigation — multiple candidate dockets found, not yet resolved to a single case.
What a Washington notice means

Governed by RCW 19.255.010. Notice to the Attorney General is required when a breach affects more than 500 Washington residents.

Note: the count is Washington residents only, not a total.

Washington breach-notification register ↗

What a California notice means

Governed by Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

What a Massachusetts notice means

Governed by M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗