Businesses must notify customers of computer security breaches that could put them at risk for identity theft under a new law that goes into effect in Indiana July 1.

“It doesn’t matter if it was one (customer) or 500,000 or a million, you have to disclose that to your customer,” said Staci Schneider, spokeswoman for the attorney general’s office. “That will give the customer an opportunity to take … precautions they need to protect themselves against identity theft.”