Maximus, Inc.

Professional ServicesUnited States of America

Maximus, Inc. is a professional services organisation in Washington. It appears on the Washington State Attorney General breach-notification register with 3 confirmed incidents (4 filings); the most recent notice was filed on August 26, 2023.

Data as of September 6, 2026.

Sources

Confirmed incident

Filed in HI, WA and DE

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

Disclosed: August 26, 2023

Timeline

August 25, 2023
Reported to regulator Regulator
WA AG breach notification: 70,847 Washington residents affected
^source
August 25, 2023
Reported to regulator Regulator
DE AG breach notification: 14,158 Delaware residents affected
^source
August 26, 2023
Reported to regulator Regulator
HI AG breach notification: 2,807 Hawaii residents affected
^source

What a Washington notice means

Required under 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 ↗

Confirmed incident

US-WA — Unauthorized Access/Disclosure

Occurred: May 17, 2021
Disclosed: June 18, 2021

Timeline

June 18, 2021
Reported to regulator Regulator
WA AG breach notification: 2,560 Washington residents affected
^source

Unverified claim

US — Ransomware Attack

This is an unverified claim — it has allegedly happened to this organisation, as posted by a source below, but has not been confirmed by a regulator, a court filing or the organisation’s own disclosure.

Timeline

July 26, 2023
Claimed by threat actor (unverified) Claim
Ransomware leak-site claim (ransomware_live)
^source

Sources

Timeline

Timeline

Timeline

Related

Same sector and location

Disclosed around the same time

Named on a leak site