Facebook Inc. FB, +1.34% launched a "Data Abuse Bounty" on Tuesday, promising to reward people who report app developers that misuse data. Facebook already has a similar bounty program for those who report security bugs. Facebook will determine the amount of the monetary reward "based on the impact of each report" and said that "high-impact bug reports" have resulted in rewards of up to $40,000. "If we confirm data abuse, we will shut down the offending app and take legal action against the company selling or buying the data, if necessary," the company said in a blog post. "We'll pay the person who reported the issue, and we'll also alert those we believe to be affected." Facebook's bounty program is one of the numerous changes announced by the company in the wake of the Cambridge Analytica scandal. Chief executive officer Mark Zuckerberg will testify about data and privacy issuers before a Senate joint hearing Tuesday afternoon. Facebook shares are up 1.4% in Tuesday morning trading and 13% over the past 12 months, compared with a 12% gain for the S&P 500 SPX, +1.37%