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UPDATE 1-Capital One shares drop on questions over hack

David Henry and Supantha Mukherjee

(New throughout)

July 30 (Reuters) - Capital One Financial Corp shares fell as much as 5.8% percent on Tuesday as investors worried about its management of customer data after the credit card issuer said information for 106 million people had been compromised.

"We are a bit surprised that a single individual could penetrate 1/8Capital One's 3/8 defenses and gain access to so many accounts," stock analyst Dominick Gabriele of Oppenheimer & Co said in a note on Monday after Capital One acknowledged the breach.

The New York State Attorney General said on Tuesday that her office would immediately begin an investigation into the matter.

The Capital One data was kept with Amazon.com Inc,, which said that its cloud unit was not compromised in any way by a former employee who was charged with computer fraud by federal prosecutors in Seattle.

"The perpetrator gained access through a misconfiguration of the web application and not the underlying cloud-based infrastructure," said a spokesperson for Amazon.

Amazon shares were down about 0.6% on Tuesday morning.

The suspect, a 33-year-old software engineer and former Amazon Web Services (AWS) employee identified as Paige Thompson, made her initial appearance in U.S. District Court in Seattle on Monday, the U.S. Attorney's office said.

In a written statement, Capital One Chief Executive Richard Fairbank said on Monday, "I sincerely apologize for the understandable worry this incident must be causing those affected and I am committed to making it right." (Reporting by David Henry and Jonathan Stempel in New York and Supantha Mukherjee in Bengaluru; Editing by Arun Koyyur and Nick Zieminski)