State notification register
Illinois data breach notification law: in the most expedient time possible and without unreasonable delay.
Illinois's breach-notification obligations are set by 815 ILCS 530 (Personal Information Protection Act (PIPA)). This page summarises the deadline to notify affected residents, the attorney general notification threshold, whether a private right of action exists, and the penalties for late or missing notification. Every provision is cited to its source statute and was verified in June 2026.
Individual deadline
No fixed day
Without unreasonable delay
AG notification
500
More than 500 Illinois residents (private collectors); 250 for state agencies
Private action
No
No direct PROA under PIPA
Statute
IL
815 ILCS 530
Section IL.1
What the statute requires
Under 815 ILCS 530, the Personal Information Protection Act (PIPA), a business that owns or licenses computerized personal information of Illinois residents must notify affected individuals in the most expedient time possible and without unreasonable delay.
Attorney general or state-agency notification is more than 500 illinois residents (private collectors); 250 for state agencies. Where required, the timeline is: within 45 days of discovery or at the time of consumer notice, whichever is sooner.
Section IL.2
What triggers notification
Like most US state statutes, notification is triggered by the unauthorized acquisition of unencrypted, unredacted computerized personal information that compromises its security, confidentiality, or integrity. Two concepts recur across the states and apply here.
Encryption safe harbor
Personal information that was encrypted, and where the encryption key was not also acquired, generally does not trigger notification. A stolen device with full-disk encryption is typically a non-event; an unencrypted record, or an encrypted record where the key was exposed alongside it, is a reportable breach.
Who must be notified
- [1] Affected Illinois residents: without unreasonable delay
- [2] Attorney general / state agency: more than 500 illinois residents (private collectors); 250 for state agencies
- [3] Consumer reporting agencies where the breach is large-scale
Section IL.3
Penalties and enforcement
Up to $50,000 per violation under the Consumer Fraud Act; restitution prioritized over penalties.
Private right of action: No. No direct PROA under PIPA; claims may run through the Consumer Fraud Act, and BIPA covers biometric data separately.
Primary source:Illinois statute 815 ILCS 530 (Personal Information Protection Act (PIPA)); verified June 2026 against state statutory summaries and the underlying statute text.
Section IL.4
How this compares to the strictest states
The strictest US deadlines are 30 days (California, Florida, Washington, Colorado, Maine, New York, New Jersey). The majority of states use a qualitative "without unreasonable delay" standard with no fixed day cap. Here is where Illinois sits.
Illinois does not set a numeric deadline. It uses a "without unreasonable delay" standard, which regulators interpret as days to weeks, not months. Organizations operating across multiple states should default to the strictest applicable clock, which can be as short as 30 days in states such as California, Colorado, Florida.
Cross-references
Index / All 50 states + DC
→The full register: deadline and AG threshold for every state.
Schedule 09 / Notification laws
→Global frameworks and the cost of notification.
01 / Breach cost calculator
→Estimate your Illinois breach exposure, including notification cost.
Regulation / GDPR
→The 72-hour clock and 4%-of-revenue fine framework.
Cost / Notification
→Why notification is roughly 6% of total breach cost.
Schedule F / Reference Q&A
Frequently Asked Questions
Primary source:Illinois data breach notification statute (815 ILCS 530). Provisions verified June 2026 against state statutory summaries (Recording Law US data-privacy series, 2026 edition), the IAPP US State Data Breach Notification Chart, Foley & Lardner's chart, and the underlying statute text.