A cache of voter records on over a half-million Americans has been found online. The records, totaling 593,328 individual sets of records, appear to contain every registered voter in the state of Alaska, according to security researchers at the Kromtech Security Research Center, who found the database. The records were stored in a misconfigured CouchDB database, which was accessible to anyone with a web browser — no password needed — until Monday when the data was secured and subsequently pulled offline. The exposed data is just a portion of a larger voter file compiled by TargetSmart, which said its national voter file — that contains 191 million voters — is the “most comprehensive and up-to-date voter file ever assembled.” The data is collected and used to help political campaigns with their fundraising, research, and voter contact programs, the company said. ZDNet was provided a small sample of the records for verification. Each XML-formatted record contained details, some sensitive and personally identifiable information, on prospective voters, including names, addresses, dates of birth, their ethnic identity, whether an individual is married, and the individual’s voting preferences.