Records reveal the scale of Homeland Security’s phone location data purchases

Investigators raised alarm bells when they learned Homeland Security bureaus were buying phone location data to effectively bypass the Fourth Amendment requirement for a search warrant, and now it’s clearer just how extensive those purchases were. TechCrunchnotes the American Civil Liberties Union has obtained records linking Customs and Border Protection, Immigration and Customs Enforcement and other DHS divisions to purchases of roughly 336,000 phone location points from the data broker Venntel. The info represents just a “small subset” of raw data from the southwestern US, and includes a burst of 113,654 points collected over just three days in 2018.

The dataset, delivered through a Freedom of Information Act request, also outlines the agencies’ attempts to justify the bulk data purchases. Officials maintained that users voluntarily offered the data, and that it included no personally identifying information. As TechCrunch explains, though, that’s not necessarily accurate. Phone owners aren’t necessarily aware they opted in to location sharing, and likely didn’t realize the government was buying that data. Moreover, the data was still tied to specific devices — it wouldn’t have been difficult for agents to link positions to individuals.

Some Homeland Security workers expressed internal concerns about the location data. One senior director warned that the Office of Science and Technology bought Venntel info without getting a necessaryPrivacy Threshold Assessment. At one point, the department even halted all projects using Venntel data after learning that key legal and privacy questions had gone unanswered.

More details could be forthcoming, as Homeland Security is still expected to provide more documents in response to the FOIA request. We’ve asked Homeland Security and Venntel for comment. However, the ACLU report might fuel legislative efforts to ban these kinds of data purchases, including the Senate’s bipartisan Fourth Amendment is Not For Sale Act as well as the more recently introduced Health and Location Data Protection Act.

Democratic lawmakers want federal regulators to track crypto mining energy use and emissions

Congressional Democrats are calling on the Environmental Protection Agency and Department of Energy to address the recent proliferation of cryptocurrency mining within the US. In a letter sent Friday (via The Guardian), Senator Elizabeth Warren and five other lawmakers said the two agencies should work together to require crypto mining firms to disclose their energy use and emissions.

The request comes after the group recently completed an investigation that began at the start of the year. According to the letter, data collected from seven of the largest mining companies in the US, including Stronghold, Bitfury and Riot, indicates they can collectively use more than 1 gigawatt of electricity. Put another way, that’s almost enough to power all the residential buildings in Houston.

Warren and the other lawmakers say they’re concerned about what all that power use will mean for the environment and consumers. Regarding the former, they state that emissions data from three of the surveyed companies indicate they emit approximately 1.6 million tons of CO2 annually or the equivalent of the tailpipe emissions of almost 360,000 cars. “Bitcoin miners are using huge quantities of electricity that could be used for other priority end uses that contribute to our electrification and climate goals, such as replacing home furnaces with heat pumps,” the letter states.

On the latter point, the lawmakers cite a 2021 study from the University of California, Berkeley that estimated crypto mining in upstate New York raised annual electricity bills by approximately $165 million for small businesses and $79 million for consumers. What’s more, they say their investigation doesn’t even scratch the surface of the full impact of crypto mining on power use and emissions in the US. “None of the companies provided full and complete information in response to our questions,” they note.

“The results of our investigation, which gathered data from just seven companies, are disturbing, with this limited data alone revealing that crypto miners are large energy users that account for a significant – and rapidly growing – amount of carbon emissions,” the letter states. By requiring crypto mining firms to disclose their energy use and emissions, the group says the EPA and Department of Energy could provide lawmakers with better data to inform future policy decisions. The agencies have until August 15th to respond to the request.