In a significant data breach, Mark L. Karno & Associates, LLC has affected the personal information of nearly 2,000 individuals. This incident raises serious concerns about data security and the protection of sensitive information. In this blog post, we will provide an overview of what happened, the details of the organization involved, and the next steps for those affected.

About Mark L. Karno & Associates, LLC

Mark L. Karno & Associates, LLC is a commercial entity located at 33 N LaSalle Street, Chicago, IL 60602. The organization specializes in providing various services, but recently found itself at the center of a serious data security incident.

What Happened

The breach occurred between July 16, 2024, and September 17, 2024, and was discovered on August 7, 2025. The incident was identified as an external system breach, attributed to hacking. A total of 1,982 individuals were affected by this breach, prompting the organization to take immediate action to inform those impacted.

Written notifications were sent out to affected parties on October 9, 2025, detailing the nature of the breach and steps being taken to address it. Additionally, the organization has offered complimentary credit monitoring and identity theft protection services through IDX to help mitigate potential risks associated with this breach.

Next Steps

If you believe you may be affected by the Mark L. Karno & Associates, LLC data breach, it is crucial to understand your rights and options. We at Srourian Law Firm (SLFLA) are here to help you navigate this situation. Please reach out to us to discuss your options and how we can assist you in protecting your personal information.