Mozilla Offering $3,000 Bounty on Security Bugs
If you need some extra summer spending money, Mozilla will give you $3,000 if you report a security flaw in one of their projects.
And not only that, but you get a free t-shirt too.
All you have to do is find a security hole in any beta or release candidate of Firefox, Thunderbird, Firefox Mobile or in Mozilla services. The bug has to be exploitable remotely and unreported.