The security glitch is linked to a cash back system that is operated by Bing, potentially leaves users and retailers exposed to potentially fake transactions. Microsoft has responded to the issue by threatening legal action against the man who discovered the problem. The affiliate scheme offers users the chance to earn money back for every product they buy through the service. Data exposed included search terms, location coordinates, and device information but no personal data. Microsoft now suggests it was done in error after identifying the official VLC media download page as unsafe with its Bing search engine, Microsoft now.
Source: https://threatpost.com/microsoft-threatens-discoverer-cash-back-loophole-bing-111109/73080/