MalwareFinancial ServicesTechnologyFinanceRansomwareData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

Texas Regional Bank

bd_ad1fde8ab38dc4f2 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 22, 2020

Filed

Jan 28, 2021

To disclose

14 weeks

Affected

1state residents only

Linked

3 filings

Confidence

67%

Full breach record for Texas Regional Bank →

American Bank Systems (ABS) notified Texas Regional Bank of a cyber incident on October 22, 2020, where malware infected ABS systems, leading to unauthorized access to customer documents. ABS engaged forensic specialists, reset passwords, and provided credit monitoring to affected individuals.

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Incident timeline

discovery → filing · 14 weeks / 98 days

Oct 22, 2020

Discovered

Jan 28, 2021

Filed

vs. sector median

+6 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Maine State AGbd_42e2cefff5f909c02021-02-01 · +4dVerified
Indiana State AGbd_52ae45e1c4a42e5a2021-01-21 · +7dVerified

Name: American Bank Systems
norm: american bank

Name: Texas Regional Bank
norm: texas regional bank
Industry: Financial ServicesllmTechnologyllm

Discovered: Oct 22, 2020
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Took systems offline
Launched an investigation
Engaged third-party computer forensic specialists
Resetting ABS user passwords
Offering credit monitoring and identity theft protection services through TransUnion
Changes made: Reviewed existing security policies
Implemented advanced endpoint monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 weeks(98 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGJan 21 · first

Montana State AG+7d · this page

Maine State AG+11d

Pattern: first filing Jan 21 (IN), last Feb 1 (ME) — a 11-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://dojmt.gov/wp-content/uploads/texas-regional-notif-1.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 28, 2021
Raw hash: 800555d25f874522350935ad1d5583b8f3e03270238e221e02912013d18547ce

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityAmerican Bank Systems

Victim entityTexas Regional Bank

Incidentdiscovered Oct 22, 2020

Stated responseTook systems offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov