BreachCensus

Frost Bank

United States of America

Frost Bank is an organisation in Texas. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register, the Texas Attorney General breach-notification register and the Vermont Attorney General breach-notification register with 1 confirmed incident; the most recent notice was filed on May 20, 2026.

Data as of September 1, 2026.

Confirmed incident

Filed in TX, CA, MA and VT

The same incident was filed separately with 4 jurisdictions within a few days of each other (TX, CA, MA and VT) — shown here as one incident.

Occurred
December 6, 2025
Disclosed
May 20, 2026
Records affected
200,271

Timeline

  1. May 20, 2026
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. May 20, 2026
    Reported to regulator Regulator

    TX AG breach notification: 191,848 Texas residents affected

    source
  3. May 20, 2026
    Reported to regulator Regulator

    VT AG breach notification: 18 Vermont residents affected

    source
  4. May 20, 2026
    Reported to regulator Regulator

    MA AG breach notification: 133 Massachusetts residents affected

    source
What a Texas notice means

Required under Tex. Bus. & Com. Code §521.053. Notice to the Attorney General is required when a breach affects at least 250 Texas residents.

Note: the published count is a total, not limited to Texas residents.

Texas breach-notification register ↗

What a California notice means

Required under Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

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 ↗

What a Vermont notice means

Required under 9 V.S.A. §2435. Notification to the Attorney General is required.

Note: the count is Vermont residents.

Vermont breach-notification register ↗