Assembly Bill 378 aims to enhance the protection of personally identifiable information (PII) in Wisconsin by prohibiting state agencies from sharing such data with the federal government unless it has been masked or anonymized. The bill defines "personally identifiable information" and "state agency," establishing clear guidelines for data sharing. However, it allows exceptions where unmasked data can be shared to comply with state or federal laws, for legislative duties, or for court functions.

Additionally, the bill introduces a civil cause of action for individuals who suffer harm due to negligent violations of this prohibition. Those found liable for such violations may be required to pay actual damages, exemplary damages up to $1,000, and cover reasonable attorney fees. This legislation seeks to safeguard citizens' privacy while still permitting necessary data sharing under specific circumstances.