The FCC must protect consumers’ privacy rights and promptly propose strong rules for broadband providers—who have access to troves of Internet users’ data—that prevent unauthorized collection and sharing of that information, a diverse coalition told the Federal Communications Commission (FCC) chairman Wednesday.

The call was made in a letter (pdf) to FCC Chairman Tom Wheeler, and signed by dozens of groups including the ACLU, Campaign for a Commercial-Free Childhood, Electronic Frontier Foundation, Free Press, Institute for Local Self-Reliance, and Public Knowledge.

Their letter states that broadband Internet providers’

It adds:

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As a press statement from media reform group Free Press explained, the FCC’s vote in February 2015 to enforce net neutrality and “reclassify broadband access providers under Title II of the Communications Act restores the FCC’s power to protect the privacy of all telecom service users, including broadband Internet access users.”

As the groups note, the changes they are now pushing the FCC to enact would afford protections to massive amounts of data.

“Every bit of data that consumers access on the Internet passes through the hands of an Internet Service Provider,” Meredith Rose, Staff Attorney at Public Knowledge, said in a media statement. “It’s this gatekeeper role that gives ISPs access to a vast amount of private data about their customers, and creates a substantial potential for abuse. We as consumers call on the FCC to open a proceeding to examine ISP’s access to, and use of, consumers’ proprietary information, and to ensure that users’ privacy is protected.”