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MonitoringIndiana AG filing · August 14, 2026

Alta Park Capital LP Data Breach Exposes Client Financial Information

Alta Park Capital LP, an investment management firm, reported a data breach to Indiana authorities in August 2026. The incident, which occurred in April 2026, involved the exposure of sensitive client financial and personal information, including full names, Social Security Numbers, and investment histories.

State
Indiana
Breach date
April 21, 2026
Reported
August 14, 2026

What may have been exposed

  • Full Name
  • Social Security Number
  • Date of Birth
  • Financial Account Number
  • Routing Number
  • Tax Identification Information
  • Investment and Portfolio History
  • Mailing Address

Alta Park Capital LP, a specialized investment management and financial services firm, formally reported a data security incident to Indiana authorities on August 14, 2026. The firm indicated that this breach originated on April 21, 2026. As an entity handling significant capital allocations and comprehensive financial planning, Alta Park Capital LP routinely collects and stores a high volume of sensitive non-public personal information.

The data types exposed in this incident include Full Name, Social Security Number, Date of Birth, Financial Account Number, Routing Number, Tax Identification Information, Investment and Portfolio History, and Mailing Address. The exposure of such a comprehensive set of personal and financial identifiers carries a high risk for affected individuals.

Individuals who receive a data breach notification from Alta Park Capital LP should take immediate steps to protect their information. It is advisable to carefully review bank and credit card statements for any unauthorized activity. Additionally, monitoring credit reports for suspicious inquiries or new accounts is a critical precaution.

Consider placing a fraud alert or a credit freeze with the major credit bureaus to prevent new accounts from being opened in your name. Changing passwords for all financial accounts and other online services is also recommended. Remaining vigilant against phishing attempts and unsolicited communications requesting personal details is crucial after such an incident.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Guard against tax fraud

    File your tax return as early as possible and consider requesting an IRS Identity Protection PIN so no one can file a fraudulent return in your name.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Source: Indiana Attorney General filing

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