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- mind and machine
Researchers say a blockchain-like system could help track government requests for private data without endangering the secrecy of investigations.
[Photo: ER_Creative/iStock]
By Steven Melendez2 minute Read
Scientists at the Massachusetts Institute of Technology have proposed a cryptographically powered system they say could help the public track court orders that let law enforcement access people’s digital data without disclosing too much information.
The system, dubbed Accountability of Unreleased Data for Improved Transparency, or AUDIT, would create a digital ledger of data requests where prosecutors would agree to make their requests public at a later date, assuming court approval. Right now, many court orders approving access to cloud data are designed to be only temporarily sealed, but prosecutors and judges often don’t go back to unseal them once cases are resolved, the scientists say. Digitally committing to unseal the requests would let members of the public track whether the documents are, in fact, later made public.
Similar to the blockchains that power bitcoin and other cryptographic currencies, the ledger would be designed to be append-only, so previous entries couldn’t be removed, though the authors write that either a distributed ledger or a ledger maintained by one trusted party, such as the Supreme Court or a court administrative agency, could be used.
“It’s completely reasonable for government officials to want some level of secrecy, so that they can perform their duties without fear of interference from those who are under investigation,” Frankle says. “But that secrecy can’t be permanent. People have a right to know if their personal data has been accessed, and at a higher level, we as a public have the right to know how much surveillance is going on.”
The technology arrives as more U.S. police are turning to technologies like Stingray devices to conduct warrant-less and intrusive data collection. More communities too are demanding increased transparency from law enforcement agencies as well as enhanced oversight of surveillance technologies. In Seattle; Berkeley and Oakland, California; and Somerville, Massachusetts; and elsewhere, grassroots efforts have led to laws that now prevent local police from obtaining surveillance equipment without approval from local policymakers.
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Future research could involve further evolution of the software and tests with federal judges in the hopes of developing a real-world prototype. Whether the federal court system, which has long been criticized for charging high fees to access court documents, will adopt a complex cryptographic ledger system to track surveillance requests remains to be seen.
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