high severity April 10, 2026 · 1 min read

JP Morgan Chase Bank, N.A. Data Breach Notice (Massachusetts Attorney General)

If you received a notice from JP Morgan Chase Bank, N.A., here’s what the filing says was exposed, and what to do about it.

JP Morgan Chase Bank, N.A. notified Massachusetts residents of a data breach in a filing reported to the Massachusetts Office of Consumer Affairs on April 10, 2026, and the notice lists financial account numbers among the information exposed.

JP Morgan Chase Bank, N.A. Data Breach Notice (Massachusetts Attorney General)

What to do now

Steps that match what this notice says was exposed

Every step below is free and you do it yourself, and none of it depends on JP Morgan Chase Bank, N.A..

Tell your bank before you do anything else. Account and routing details are the fastest-moving of the fields in this notice. Call the number on the back of your card rather than any number in an email, and ask them to watch the account and reissue the card.

One more, whatever was exposed: a breach notice is a favourite disguise for a phishing email. If a message about this arrives, do not use its links — go to the company’s site yourself, or call the number on your statement.

Report details & sourcing

Severity High includes account details that can be misused directly

Disclosed April 10, 2026

Last reviewed July 22, 2026

Affected 1

Data exposed Financial account numbers

By GalaxyWarden Threat Research · Editorial & sourcing standards

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

Sources: Massachusetts Office of Consumer Affairs breach notification

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JP Morgan Chase Bank, N.A. Data Breach Notice (Massachusetts Attorney General)

Steps that match what this notice says was exposed

Report details & sourcing

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