John Mulligan, Target’s chief financial officer, apologized before a Senate Judiciary Committee hearing on Tuesday for a data breach at the retailer last year that put information from as many as 110 million consumers at risk.

“I want to say how deeply sorry we are for the impact this incident has had on our guests—your constituents,” Mulligan told the committee. “We will work with you, the business community and other thought leaders to find effective solutions to this ongoing and pervasive challenge...We will learn from this incident and, as a result, we hope to make Target, and our industry, more secure for customers in the future."

Senators were fairly easy on Mulligan and used the hearing as an excuse to call for an expanded look into data breaches across all industries. “We can thank God that you provide a vital retail service, but you’re not putting down the electric grid, and you’re not putting the servers behind all of our banks and financial systems,” said Sen. Sheldon Whitehouse (D-R.I.). “This is a window into a much larger problem.”

Hackers gained access to data from more than 40 million Target customers' credit cards between Nov. 27 and Dec. 15, the company reported in December. In January, the retailer admitted that data like names, addresses, phone numbers and email addresses from 70 million customers was also compromised. Target said it didn't know the extent of the overlap.

Target CEO Gregg Steinhafel apologized for the incident in December as well.

The Department of Justice is also investigating the breach.

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