Stealing MS Passport's Wallet -- "In a demonstration of the exploit earlier this week, Slemko sent Wired News a specially crafted but innocent-looking e-mail. Moments after the e-mail was viewed using Microsoft's Hotmail Web-based e-mail service, Slemko rattled off, over the phone, the credit card number and contact information from the user's Passport wallet."

Another reason why the market needs choices for Internet credential management; assuming a market of more than 1, some service providers are likely to take steps to offer more secure services in order to attract customers more concerned with security. Additionally, these services need to be based on interoperable and open standards to prevent a single provider from controlling the entire marketplace.