Illinois Eavesdropping Act

California's Invasion of Privacy Act has generated hundreds of lawsuits against companies that intercept chat communications and harvest data without consent. Though it is a lesser known statute, Illinois has its own powerful wiretapping statute and it remains underutilized as a vehicle for consumer privacy protection. Contact our digital privacy lawyers to learn more.

Understanding the The Illinois Eavesdropping Act

The Illinois Eavesdropping Act prohibits the intentional use of any device to hear, transmit, or record any oral, telephone, or electronic communication without the consent of all parties to that communication. Illinois is an all-party consent state, which means every participant in a conversation must agree to its recording or interception.

The statute was substantially amended following a 2014 Illinois Supreme Court ruling that struck down portions of the prior version on First Amendment grounds. The revised law narrowed its scope in some respects while preserving protections for private electronic communications. The new version of the law applies to electronic communications, a term broad enough to encompass the kinds of digital data collection practices that have become standard across multiple industries.

How It Compares to California's Wiretap Law

California's Invasion of Privacy Act and the Illinois Eavesdropping Act share the same foundational architecture and both require all-party consent. Both apply to electronic communications and both authorize private civil claims.

California courts have spent years developing case law around CIPA's application to live chat tools and session replay software. That body of precedent has made CIPA claims somewhat easier to pursue because the legal arguments are well-developed. Illinois plaintiffs have access to the same underlying legal theories, a potential opportunity for individuals whose data has been collected without proper consent.

Examples of Conduct That May Violate the Illinois Eavesdropping Act

• Live chat interception. When a consumer visits a website and types a message into a live chat window, that communication may pass through one or more third-party vendor platforms before reaching the company's customer service team. If an Illinois resident's chat message is routed through a third-party system that captures and stores it without affirmative consent, the interception may fall within the Act's prohibitions.
• Session replay and keystroke logging. Software tools that record a user's keystrokes, mouse movements, and form entries in real time are widely deployed across commercial websites. An Illinois resident who types personal health information or contact details into a web form may have that data captured by a session replay vendor before hitting submit. If the company failed to disclose this practice and obtain consent, the recording may constitute an unlawful interception under the Act.
• Undisclosed call recording. Many businesses record customer service calls as a matter of routine. Under Illinois law, simply playing a recorded disclaimer at the start of a call may not satisfy the all-party consent requirement. Companies that record calls involving Illinois residents are potentially liable.
• Chatbot and AI conversation capture. Automated chat systems and AI-powered customer assistants often store conversation transcripts for training and optimization purposes. When this data collection is not disclosed, Illinois residents interacting with these systems may have claims based on the unconsented recording of their communications.

How Illinois Plaintiffs Can File Claims

A plaintiff pursuing a claim under the Illinois Eavesdropping Act must establish that an electronic communication occurred, that it was intercepted or recorded, that the defendant used a device to accomplish the interception, and that the plaintiff did not consent to the recording.

Claims may be brought individually or as class actions. Given that data collection practices tend to be uniform across a company's entire user base, class certification is often more realistic. Successful plaintiffs may recover actual damages, making these cases financially viable even when individual harm is difficult to quantify precisely.

Why Hire The Lyon Firm for Data Privacy Violation Cases

The Lyon Firm represents individuals and classes of consumers in data privacy litigation in Illinois, California, and nationwide. The firm brings focused experience in electronic surveillance cases and consumer privacy litigation, and holds companies accountable when they cross the line.

If you are an Illinois resident whose communications were intercepted without consent, or a consumer in any state facing unlawful data collection practices, The Lyon Firm has the experience and resources to evaluate your claim and pursue it. Contact The Lyon Firm today for a free case evaluation.