BreachCensus

National Grid

EnergyUnited States of America

SEC EDGAR CIK 0001004315

National Grid is an energy organisation in Massachusetts. It appears on the Massachusetts Attorney General breach-notification register with 3 confirmed incidents; the most recent notice was filed on November 19, 2021.

Data as of September 6, 2026.

Sources

Confirmed incident

US-MA

Disclosed
November 19, 2021

Timeline

  1. November 19, 2021
    Reported to regulator Regulator

    MA AG breach notification: 11 Massachusetts residents affected

    source
What a Massachusetts notice means

Required under 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 ↗

Confirmed incident

US-MA

Disclosed
March 19, 2020

Timeline

  1. March 19, 2020
    Reported to regulator Regulator

    MA AG breach notification: 1 Massachusetts residents affected

    source
Confirmed incident

US-MA

Disclosed
March 29, 2019

Timeline

  1. March 29, 2019
    Reported to regulator Regulator

    MA AG breach notification: 58 Massachusetts residents affected

    source

Related

Disclosed around the same time