An anonymous reader shares a report: According to a confidential document obtained by Motherboard, wireless communications lobby group CTIA took issue with an in-depth report by the Department of Homeland Security on mobile device security, including flaws with the SS7 network. In a white paper sent to members of Congress and the Department of Homeland Security, CTIA, a telecom lobbying group that represents Verizon, AT&T, and other wireless carriers, argued that "Congress and the Administration should reject the [DHS] Report's call for greater regulation" while downplaying "theoretical" security vulnerabilities in a mobile data network that hackers may be able to use to monitor phones across the globe, according to the confidential document obtained by Motherboard. However, experts strongly disagree about the threat these vulnerabilities pose, saying the flaws should be taken seriously before criminals exploit them. SS7, a network and protocol often used to route messages when a user is roaming outside their provider's coverage, is exploited by criminals and surveillance companies to track targets, intercept phone calls or sweep up text messages. In some cases, criminals have used SS7 attacks to obtain bank account two-factor authentication tokens, and last year, California Rep. Ted Lieu said that, for hackers, "the applications for this vulnerability are seemingly limitless."