Many industry groups, lawmakers and the White House believe CISA is needed to help the country better defend itself against cyberattacks. But privacy advocates have criticized the bill as a surveillance measure that will simply shuttle more of Americans’ personal data to the government. A tension already always existed between the need for security and the desire for privacy. Proponents say CISA will make it easier for the government to coordinate threat responses among the banks, retailers, service providers and tech giants that are most often under attack. Opponents, including more than 20 of the biggest companies in the tech industry, argue that the bill doesn’t do enough to protect the privacy of individuals and could lead to mass government surveillance.