Find a bug in Windows, get $100,000

Microsoft has announced a 'bounty' program in a bid to encourage developers and security experts to find exploits in its upcoming products like Windows 8.1
Under the program, which will launch on June 26, Microsoft is offering to pay up to $100,000 USD for "truly novel exploitation techniques" against protections built into the latest version of its operating system Windows 8.1 Preview.
Windows 8.1 is a major update to Microsoft's brand new operating system Windows 8.