MalwareTechnologyInformationRansomwareCapture Stored DataData ExfiltratedData EncryptedRansom DemandedData Leak ThreatenedCustomer Data InvolvedCredentialsPIILowContained

Take One Systems, Inc.

bd_f5de2a97917e5779 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Jan 27, 2026

To disclose

—

Affected

Not disclosed

Confidence

78%

Full breach record for Take One Systems, Inc. →

Take One Systems, Inc., an IT managed services provider, suffered a ransomware attack on or around January 25, 2026. The attacker accessed the company's file server, exposing stored administrative credentials including Microsoft 365 admin passwords, domain registration passwords, PC setup notes, and Intuit QuickBooks login credentials. The company cannot confirm whether files were exfiltrated. Passwords were reset and MFA was activated across affected accounts.

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Incident timeline

Jan 25, 2026

Begins

Jan 27, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Take One Systems, Inc.
norm: take one

Name: Take One Systems, Inc.
norm: take one
Industry: Technologyllm

Discovered: —
Breach occurred: Jan 25, 2026
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: CredentialsPII
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid AccountsT1555 Credentials from Password Stores
Threat actor: ExternalFinancial
Regulator citations: Submitted breach notification to California Attorney General

During the incident: Changed Microsoft 365 Admin account password
Changed domain admin password for koyucorp.com and activated MFA
Instructed users to change their Microsoft 365 passwords
Changed Trendmicro and Avanan account passwords and verified MFA is active
Changed Intuit Quickbooks account password and verified that MFA is active
Changes made: Activated MFA on Microsoft 365 Admin account
Activated MFA on domain registration admin account
Implemented all possible measures to prevent any harm
Instructed users to set up MFA by SMS or Smartphone App
Committed to further strengthening management systems
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://oag.ca.gov/ecrime/databreach/reports/sb24-617733
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 27, 2026
Raw hash: a155daccc716387ae16591f5eecb1fbed50df7ca85d8fc77a8c12f6dd7f562ed

Reporting entityTake One Systems, Inc.

Victim entityTake One Systems, Inc.

IncidentRansomware

Stated responseChanged Microsoft 365 Admin account password

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov