The software engineer accused of stealing the personal information of more than 100 million people from Capital One also obtained data from over 30 companies and other organizations, according to federal prosecutors.

In a court filing Tuesday, prosecutors said they found multiple terabytes of stolen data from other companies, educational institutions and other organizations on seized servers from the bedroom of Paige Thompson, a former employee of Amazon Web Services who was accused of the high-profile data heist.

Ms. Thompson was arrested and charged last month in the breach of Capital One’s database, which was hosted on Amazon Web Services computers. According to court documents, Ms. Thompson had stolen 140,000 Social Security numbers and 80,000 bank account numbers.

At the time, Capital One said it had tens of millions of credit card applications stolen, including one million Canadian social insurance numbers — the equivalent of Social Security numbers in the United States.