Only a handful of tech companies have earned the Electronic Frontier Foundation’s coveted five-star rating in its annual "Who Has Your Back?" scorecard , released on Monday.

The top-rated companies for 2017 include Adobe, Credo Mobile, Dropbox, Lyft, Pinterest, Sonic, Uber, Wickr, and WordPress. Notable names among the lowest-rated companies include Comcast, AT&T, T-Mobile, Verizon, Amazon, and WhatsApp.

The EFF's Who Has Your Back? report analyzes and evaluates how companies deal with user data when government entities come seeking it. "Third-party companies hold more and more of our personal data as technology and user practices evolve," the EFF writes in its initiative description. "The annual Who Has Your Back? report encourages companies to protect users from government requests for data and helps users make informed choices about their Internet use."

This year, the EFF changed the wording of most of the categories—they now include "follows industry-wide best practices" and "promises not to sell out users." The latter is largely a way to laud Twitter for booting the Central Intelligence Agency off of its Dataminr platform in 2016.

"Two tech companies lagged behind in the industry: Amazon and WhatsApp, both of which earned just two stars," the advocacy group wrote in a press release. "EFF’s survey showed that while both companies have done significant work to defend user privacy—EFF especially lauds WhatsApp’s move to adopt end-to-end encryption by default for its billion users around the world—their policies still lag behind. Online retail giant Amazon is consistently rated number one in customer service, yet it hasn’t made the public commitments to stand behind its users that the rest of the industry has."

Another new category includes "stands up to NSL gag orders," referring to National Security Letters , the often-maligned practice of being forced to hand over data to the government that nearly always comes with a built-in gag order. In late 2016, Credo Mobile confirmed that it had received an NSL order and had challenged it all the way up to the 9th US Circuit Court of Appeals—the EFF helped with those legal efforts.

In the same Monday press release, EFF said that it believes such NSLs, which are issued directly by a law enforcement or national security agency (rather than by a judge), are unconstitutional.