Microsoft is offering up to $100,000 in exchange for finding vulnerabilities and exploits in the upcoming preview version of Windows 8.1 Preview. Microsoft’s senior security strategist, Katie Moussouris, noted that the company is giving out rewards because Microsoft doesn’t want to wait for another competition to learn about exploitation techniques. The bounty being offered by Microsoft will be the highest by a tech company for a bug bounty reward program. Google reportedly pay between $500 and $1,333.70 for flaws in its web browser Google Chrome.
Source: https://thehackernews.com/2013/06/Hacking-Windows-8.1-download-bounty.html

