Security Reward Programs have been a cornerstone of our relationship with the security research community since 2010. We’ve now paid more than $4,000,000 in rewards to security researchers since 2010 across all of our reward programs. Vulnerability Research Grants are up-front awards that we will provide to researchers before they submit a bug. Starting today, all mobile applications officially developed by Google on Google Play and iTunes will now be within the scope of the Vulnerability Reward Program. There will be various tiers of grants, with a maximum of $3,133.70 USD.”]
Source: https://security.googleblog.com/2015/01/security-reward-programs-year-in-review.html