Special to the Chronicle

Do you have a Capital One credit card?

You should know that a hacker has been arrested for hacking more than 100 million Capital One customers’ credit card, bank and Social Security data.

Paige Thompson, 33, is accused of breaking into a Capital One server and gaining access to 140,000 Social Security numbers, 80,000 bank account numbers, an undisclosed number of names, addresses, credit scores, credit limits, balances and other information.

Capital One said it will notify you if your data was affected and will make free credit monitoring and identity protection available.

A criminal complaint says Thompson had worked for Amazon as a software engineer in Seattle. She tried to share the data online.

Thompson was arrested Monday and charged with gaining access through a misconfigured firewall.

Capital One said the hack occurred March 22-23 but was not discovered until July.

The company worked with the FBI to catch the hacker before disclosing the data breach Tuesday.

The company said it fixed the problem and it is “unlikely that the information was used for fraud.”

Capital One expects customer notifications, credit monitoring, tech and legal costs of up to $150 million.