BreachCensus

Mutual One Bank

United States of America

Mutual One Bank is an organisation in Massachusetts. It has filed 387 notices across 8 years with the Massachusetts Attorney General breach-notification register; the most recent notice was filed on May 20, 2026.

Data as of September 12, 2026.

2026 — 2 notices (April 1, 2026 – May 20, 2026), MA
2025 — 3 notices (February 10, 2025 – July 11, 2025), MA
2024 — 24 notices (January 10, 2024 – May 2, 2024), MA
2023 — 102 notices (January 3, 2023 – December 30, 2023), MA
2022 — 88 notices (January 3, 2022 – December 30, 2022), MA
2021 — 63 notices (January 6, 2021 – December 28, 2021), MA
2020 — 53 notices (January 2, 2020 – December 30, 2020), MA
2019 — 52 notices (January 7, 2019 – December 23, 2019), MA