Senate Bill 2610 added Chapter 542 to the Business and Commerce Code. It applies to a business that owns or licenses computerized data containing sensitive personal information and has fewer than 250 employees. If such a business is sued in tort after a breach, it is entitled to an affirmative defense against exemplary damages, the punitive part of a judgment, if it can show it implemented and maintained a cybersecurity program that met the statute's requirements at the time of the breach.
It does not shield the business from actual damages, from the Attorney General, or from the duty to notify. The clocks in Business and Commerce Code §521.053 keep running: affected Texans have to be told within 60 days of the breach being determined, and the Attorney General within 30 days if 250 or more Texans are affected; those reports are published by the Attorney General, so the second clock is a public one.