Reporting Lost Credit Cards
When credit card numbers are lost or compromised, there needs to be a way to report them to banks and outlets so they won't be used illegally. In the past, a program called Cardcops has been used for this purpose.
Microsoft is now promoting the use of a new program, which it hopes will be successful because of its speed in reporting, which is often important in cases of fraud. See this write-up on the new program.