The First District Appellate Court recognized a "common-interest" exception to the waiver of attorney-client and work-product privileges where two co-defendants met and shared information about the lawsuit as part of a "joint defense agreement."

The State Records Commission amended Title 44 of the Illinois Administrative Code, which regulates Government Contracts, Procurement, and Property Management. 44 Ill Adm Code 4400.

On October 31, 2008, the Illinois Appellate Court, Fourth District, reversed the judgment of the Circuit Court of Logan County denying the state's request for a subpoena duces tecum, seeking release of a defendant's medical records for the day the defendant was charged with driving under the influence (DUI).

The Department of Children and Family Services (DCFS), amended 89 Ill Adm Code 431, which deals with the disclosure of foster children's confidential information. 

Effective July 1, 2006, the Consumer Fraud and Deceptive Business Practices Act will have several additional measures restricting the use of social security numbers.

A person or entity may not print an individual's social security number on an insurance card.

The Illinois Department of Insurance recently adopted rulemaking with the goal of providing better safeguards for customer information.

The Illinois Department of Insurance has adopted amendments under 2 Ill Adm Code 951 relating to Access to Public Records.

On December 5, 2002, the Illinois Supreme Court held that the Department of Professional Regulation may not subpoena a dentist's private patient files.

On February 22, 2002, the Illinois Supreme Court reversed the judgment of the appellate court in ruling that when a patient and his wife brought a malpractice action against a hospital and doctors, they did not place the patient's mental health at issue.