spearheaded attacks at e-commerce giant Amazon during a hearing on data privacy and competition Tuesday, while other senators on the panel voiced concerns over data brokers harvesting user information. Other senators on the panel didn’t voice opposition to Warren’s calls for revamping antitrust laws, but rather, they focused their time during the hearing on witnesses with expertise in data privacy. Stacey Gray, senior counsel at Future of Privacy Forum, said the “sheer scale and volume” in the modern commercial data ecosystem has made it “increasingly untenable” to separate related fields of law enforcement and national security uses of data and commercial uses and collections of data.