One man arrested for identity theft in Scottsdale last December showed detectives how he simply went to the county Web site and obtained victims’ names, addresses and bank account numbers, along with scans of their signatures from divorce filings. A survey by Javelin Strategy and Research, a private research company, found one in six Arizona adults had their identities stolen in the last five years, which is double the national average. A Federal Trade Commission survey in 2003 said about 10 million U.S. citizens had their identities stolen in the previous year, with losses to the economy of $48 billion.