A 2008 extortion letter from an unknown hacker threatened to expose millions of Express Scripts’ records on the Internet. The extortion letter included Social Security numbers, addresses, dates of birth, and prescription information. The company says it will not give in to the extortionist, but it is offering a $1 million reward for information leading to the arrest and conviction of the hacker. In a news report, a spokeswoman said some 700,000 are being notified of the identity of the other members whose identities may have been compromised.”]