writes "The NSA uses its XKeyscore spying tool to find Windows Error Reporting crash reports, which are sent in the clear to Microsoft. The information is used to fingerprint machines for compromise, and is a treasure trove of system and application data for not only the spy agency, but for hackers as well who may have compromised an upstream proxy or ISP.
The best countermeasure, since the feature is on by default post-Windows XP, is a change to a Group Policy setting that forces that initial transmission to be encrypted. However, 80 percent of the billion-plus Windows machines on the plant, participate in the program and send this sensitive data in the clear."Link to Original Source