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Georgia Prosecutors Stoke Fears over Use of Encrypted Messengers and Tor

20 May 2024 at 16:23

In an indictment against Defend the Atlanta Forest activists in Georgia, state prosecutors are citing use of encrypted communications to fearmonger. Alleging the defendants—which include journalists and lawyers, in addition to activists—in the indictment were responsible for a number of crimes related to the Stop Cop City campaign, the state Attorney General’s prosecutors cast suspicion on the defendants’ use of Signal, Telegram, Tor, and other everyday data-protecting technologies.

“Indeed, communication among the Defend the Atlanta Forest members is often cloaked in secrecy using sophisticated technology aimed at preventing law enforcement from viewing their communication and preventing recovery of the information” the indictment reads. “Members often use the dark web via Tor, use end-to-end encrypted messaging app Signal or Telegram.”

The secure messaging app Signal is used by tens of millions of people, and has hundreds of millions of global downloads. In 2021, users moved to the nonprofit-run private messenger en masse as concerns were raised about the data-hungry business models of big tech. In January of that year, former world’s richest man Elon Musk tweeted simply “Use Signal.” And world-famous NSA whistle-blower Edward Snowden tweeted in 2016 what in information security circles would become a meme and truism: “Use Tor. Use Signal.”

Despite what the bombastic language would have readers believe, installing and using Signal and Tor is not an initiation rite into a dark cult of lawbreaking. The “sophisticated technology” being used here are apps that are free, popular, openly distributed, and widely accessible by anyone with an internet connection. Going further, the indictment ascribes the intentions of those using the apps as simply to obstruct law enforcement surveillance. Taking this assertion at face value, any judge or reporter reading the indictment is led to believe everyone using the app simply wants to evade the police. The fact that these apps make it harder for law enforcement to access communications is exactly because the encryption protocol protects messages from everyone not intended to receive them—including the users’ ISP, local network hackers, or the Signal nonprofit itself.

Elsewhere, the indictment hones in on the use of anti-surveillance techniques to further its tenuous attempts to malign the defendants: “Most ‘Forest Defenders’ are aware that they are preparing to break the law, and this is demonstrated by premeditation of attacks.” Among a laundry list of other techniques, the preparation is supposedly marked by “using technology avoidance devices such as Faraday bags and burner phones.” Stoking fears around the use of anti-surveillance technologies sets a dangerous precedent for all people who simply don’t want to be tracked wherever they go. In protest situations, carrying a prepaid disposable phone can be a powerful defense against being persecuted for participating in first-amendment protected activities. Vilifying such activities as the acts of wrongdoers would befit totalitarian societies, not ones in which speech is allegedly a universal right.

To be clear, prosecutors have apparently not sought to use court orders to compel either the defendants or the companies named to enter passwords or otherwise open devices or apps. But vilifying the defendants’ use of common sense encryption is a dangerous step in cases that the Dekalb County District Attorney has already dropped out of, citing “different prosecutorial philosophies.”

Using messengers which protect user communications, browsers which protect user anonymity, and employing anti-surveillance techniques when out and about are all useful strategies in a range of situations. Whether you’re looking into a sensitive medical condition, visiting a reproductive health clinic with the option of terminating a pregnancy, protecting trade secrets from a competitor, wish to avoid stalkers or abusive domestic partners, protecting attorney-client exchanges, or simply want to keep your communications, browsing, and location history private, these techniques can come in handy. It is their very effectiveness which has led to the widespread adoption of privacy-protective technologies and techniques. When state prosecutors spread fear around the use of these powerful techniques, this sets us down a dangerous path where citizens are more vulnerable and at risk.

Restricting Flipper is a Zero Accountability Approach to Security: Canadian Government Response to Car Hacking

28 March 2024 at 23:30

On February 8, François-Philippe Champagne, the Canadian Minister of Innovation, Science and Industry, announced Canada would ban devices used in keyless car theft. The only device mentioned by name was the Flipper Zero—the multitool device that can be used to test, explore, and debug different wireless protocols such as RFID, NFC, infrared, and Bluetooth.

EFF explores toilet hacking

While it is useful as a penetration testing device, Flipper Zero is impractical in comparison to other, more specialized devices for car theft. It’s possible social media hype around the Flipper Zero has led people to believe that this device offers easier hacking opportunities for car thieves*. But government officials are also consuming such hype. That leads to policies that don’t secure systems, but rather impedes important research that exposes potential vulnerabilities the industry should fix. Even with Canada walking back on the original statement outright banning the devices, restricting devices and sales to “move forward with measures to restrict the use of such devices to legitimate actors only” is troublesome for security researchers.

This is not the first government seeking to limit access to Flipper Zero, and we have explained before why this approach is not only harmful to security researchers but also leaves the general population more vulnerable to attacks. Security researchers may not have the specialized tools car thieves use at their disposal, so more general tools come in handy for catching and protecting against vulnerabilities. Broad purpose devices such as the Flipper have a wide range of uses: penetration testing to facilitate hardening of a home network or organizational infrastructure, hardware research, security research, protocol development, use by radio hobbyists, and many more. Restricting access to these devices will hamper development of strong, secure technologies.

When Brazil’s national telecoms regulator Anatel refused to certify the Flipper Zero and as a result prevented the national postal service from delivering the devices, they were responding to media hype. With a display and controls reminiscent of portable video game consoles, the compact form-factor and range of hardware (including an infrared transceiver, RFID reader/emulator, SDR and Bluetooth LE module) made the device an easy target to demonize. While conjuring imagery of point-and-click car theft was easy, citing examples of this actually occurring proved impossible. Over a year later, you’d be hard-pressed to find a single instance of a car being stolen with the device. The number of cars stolen with the Flipper seems to amount to, well, zero (pun intended). It is the same media hype and pure speculation that has led Canadian regulators to err in their judgment to ban these devices.

Still worse, law enforcement in other countries have signaled their own intentions to place owners of the device under greater scrutiny. The Brisbane Times quotes police in Queensland, Australia: “We’re aware it can be used for criminal means, so if you’re caught with this device we’ll be asking some serious questions about why you have this device and what you are using it for.” We assume other tools with similar capabilities, as well as Swiss Army Knives and Sharpie markers, all of which “can be used for criminal means,” will not face this same level of scrutiny. Just owning this device, whether as a hobbyist or professional—or even just as a curious customer—should not make one the subject of overzealous police suspicions.

It wasn’t too long ago that proficiency with the command line was seen as a dangerous skill that warranted intervention by authorities. And just as with those fears of decades past, the small grain of truth embedded in the hype and fears gives it an outsized power. Can the command line be used to do bad things? Of course. Can the Flipper Zero assist criminal activity? Yes. Can it be used to steal cars? Not nearly as well as many other (and better, from the criminals’ perspective) tools. Does that mean it should be banned, and that those with this device should be placed under criminal suspicion? Absolutely not.

We hope Canada wises up to this logic, and comes to view the device as just one of many in the toolbox that can be used for good or evil, but mostly for good.

*Though concerns have been raised about Flipper Devices' connection to the Russian state apparatus, no unexpected data has been observed escaping to Flipper Devices' servers, and much of the dedicated security and pen-testing hardware which hasn't been banned also suffers from similar problems.

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