July 29 (Reuters) - Capital One Financial Corp said on Monday personal information including names, addresses, phone numbers and credit scores of about 100 million individuals in the United States and 6 million people in Canada were obtained by a hacker who has been arrested.

The U.S. credit card issuer said it identified the hack on July 19 and the individual responsible has been arrested by the Federal Bureau of Investigation.

The incident is expected to cost between $100 million and$150 million in 2019, mainly due to customer notifications, credit monitoring and legal support, Capital One said.

12 PHOTOS Federal data hack, U.S. government, data breach See Gallery Federal data hack, U.S. government, data breach Katherine Archuleta, director of the Office of Personnel Management, listens during a hearing of the Senate Homeland Security and Governmental Affairs Committee on Capitol Hill June 25, 2015 in Washington, DC. Witnesses testified about the hacking of Office of Personnel Management data. (Photo credit: BRENDAN SMIALOWSKI/AFP/Getty Images) From left Katherine Archuleta, director of the Office of Personnel Management, US Chief Information Officer Tony Scott, Assistant Homeland Security Secretary for National Protection and Programs Andy Ozment, and McFarland, inspector general of the Office of Personnel Management, are sworn in during a hearing of the Senate Homeland Security and Governmental Affairs Committee on Capitol Hill June 25, 2015 in Washington, DC. Witnesses testified about the hacking of Office of Personnel Management data. AFP PHOTO/BRENDAN SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images) UNITED STATES - JUNE 23 - Katherine Archuleta, director, Office of Personnel Management, testifies during a Senate Appropriations Financial Services and General Government Subcommittee hearing to review data security and information technology spending at the Office of Personal Management on Capitol Hill on Tuesday, June 23, 2015. (Photo By Al Drago/CQ Roll Call) WASHINGTON, DC - JUNE 23: Katherine Archuleta, director of Office of Personnel Management, arrives for a Senate Appropriations Financial Services and General Government Subcommittee hearing to review information technology spending and data security at the U.S. Office of Personnel Management, on Capitol Hill, June 23, 2015 in Washington, DC. FBI Director James Comey recently told Senators in a closed-door meeting that the personal data of an estimated 18 million current and former federal employees were affected by a recent cyber breach at the Office of Personnel Management. (Drew Angerer/Getty Images) White House Press Secretary Josh Earnest answers questions on the massive cyber-attack on the personal data of government employees June 5, 2015 during the daily briefing in the Brady Briefing Room of the White House in Washington, DC. The US government on Thursday admitted hackers accessed the personal data of at least four million current and former federal employees, in a vast cyber-attack suspected to have originated in China. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images) White House Press Secretary Josh Earnest answers questions on the massive cyber-attack on the personal data of government employees June 5, 2015 during the daily briefing in the Brady Briefing Room of the White House in Washington, DC. The US government on Thursday admitted hackers accessed the personal data of at least four million current and former federal employees, in a vast cyber-attack suspected to have originated in China. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images) White House Press Secretary Josh Earnest answers questions on the massive cyber-attack on the personal data of government employees June 5, 2015 during the daily briefing in the Brady Briefing Room of the White House in Washington, DC. The US government on Thursday admitted hackers accessed the personal data of at least four million current and former federal employees, in a vast cyber-attack suspected to have originated in China. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images) WASHINGTON, DC - JUNE 05: The Theodore Roosevelt Federal Building that houses the Office of Personnel Management headquarters is shown June 5, 2015 in Washington, DC. U.S. investigators have said that at least four million current and former federal employees might have had their personal information stolen by Chinese hackers. (Photo by Mark Wilson/Getty Images) WASHINGTON, DC - JUNE 05: The entrance to the Theodore Roosevelt Federal Building that houses the Office of Personnel Management headquarters is shown June 5, 2015 in Washington, DC. U.S. investigators have said that at least four million current and former federal employees might have had their personal information stolen by Chinese hackers. (Photo by Mark Wilson/Getty Images) WASHINGTON, DC - JUNE 05: The Theodore Roosevelt Federal Building that houses the Office of Personnel Management headquarters is shown June 5, 2015 in Washington, DC. U.S. investigators have said that at least four million current and former federal employees might have had their personal information stolen by Chinese hackers. (Photo by Mark Wilson/Getty Images) The American flag is reflected in a window at the Theodore Roosevelt Building, headquarters of the U.S. Office of Personnel Management (OPM), in Washington, D.C., U.S., on Friday, June 5, 2015. The disclosure by U.S. officials that Chinese hackers stole records of as many as 4 million government workers is now being linked to the thefts of personal information from health-care companies. The hackers, thought to have links to the Chinese government, got into the OPM computer system late last year, according to one U.S. official. Photographer: Andrew Harrer/Bloomberg via Getty Images Vehicles drive past the Theodore Roosevelt Building, headquarters of the U.S. Office of Personnel Management (OPM), in Washington, D.C., U.S., on Friday, June 5, 2015. The disclosure by U.S. officials that Chinese hackers stole records of as many as 4 million government workers is now being linked to the thefts of personal information from health-care companies. The hackers, thought to have links to the Chinese government, got into the OPM computer system late last year, according to one U.S. official. Photographer: Andrew Harrer/Bloomberg via Getty Images Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

The hacker did not gain access to credit card account numbers, but about 140,000 social security numbers and 80,000 linked bank account numbers were compromised, Capital One said.

About 1 million social insurance numbers of the company's Canadian credit card customers were also compromised.

The hacker was able to 'exploit' a 'configuration vulnerability' in the company's infrastructure, it said, adding that the vulnerability was reported to Capital One by an external researcher.

(Reporting by Uday Sampath in Bengaluru; Editing by Sandra Maler and Sonya Hepinstall)

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