On June 7, Chairman of the Senate Committee on Banking, Housing, and Urban Affairs, Senator Sherrod Brown sent a letter to Treasury Secretary Janet Yellen requesting that the Financial Stability Oversight Council conduct a review on the effect of the collection and sale of consumer data by financial institutions to determine whether such activities pose a systemic threat to U.S. financial stability and security. The letter raised concerns that such data could be used for nefarious purposes including “glean[ing] consumers’ tolerance for price hikes, or using certain people’s spending patterns to target them for blackmail or ransomware.”