The John Buck Company (“Tjbc”) data breach

Clerk's notes

On June 10, 2025, The John Buck Company (Tjbc) officially filed a data breach notification with the Illinois Attorney General. This filing serves as a public record acknowledging a cybersecurity incident that may have affected the personal information of individuals.

The John Buck Company, a significant real estate development and property management firm based in Illinois, routinely handles sensitive personal information as part of its operations. While the precise nature of the cyberattack remains under investigation, incidents of this kind typically involve unauthorized access to corporate networks or data repositories. The company has not specified the exact types of personal information involved in this incident, but due to its business nature, the information it manages is often highly sensitive.

For those whose personal information may have been compromised, such incidents can lead to various risks, including the potential for identity theft and other fraudulent activities. Remaining vigilant by monitoring personal accounts and financial statements is a crucial step in mitigating these risks. The full extent of the exposure is currently being assessed.

Under Illinois state data protection statutes, companies like The John Buck Company have a legal obligation to implement robust security measures to safeguard personal data. This data breach suggests that vulnerabilities may have existed within the company's security framework. The investigation into the incident is ongoing, and more details may emerge as the review progresses.

If you have received a data breach notification letter from The John Buck Company, this formal acknowledgment establishes your standing to seek legal recourse. Our firm is actively investigating claims on behalf of those affected. We offer a free case review to help you understand your legal options, and there are no out-of-pocket costs or fees unless we successfully recover compensation on your behalf. This is attorney advertising.

If a notification letter about this breach reached you, see every Illinois data breach on file or browse all cases.