Northrop Grumman Systems Corporation

Northrop Grumman Systems Corporation notified California AG on Apr 19, 2017 of a data breach, which occurred on Mar 29, 2017. Data exposed: Social Security number, Usernames / passwords, Email address, Tax ID / EIN / ITIN, Phone number, Postal address, Name.

Organization: Northrop Grumman Systems Corporation
Source: California AG · source record
Date reported: Apr 19, 2017
Date(s) of breach: Monday, April 18, 2016Wednesday, March 29, 2017
Residents affected: Not published by this source
Data exposed: Social Security number Usernames / passwords Email address Tax ID / EIN / ITIN Phone number Postal address Name
Notice letter: Sample notice (PDF)
First seen by BreachTally: 2026-10-30 16:18 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.