There is a privacy threat lurking on perhaps hundreds of millions of devices, that could enable potential attackers to track and profile users, by using information leaked via the Tor network, even if the users never intentionally installed Tor in the first place.
In a session at the SecTor security conference in Toronto, Canada on October 10, researchers Adam Podgorski and Milind Bhargava from Deloitte Canada outlined and demonstrated previously undisclosed research into how they were able to determine that personally identifiable information (PII) is being leaked by millions of mobile users every day over Tor.
The irony of the issue is that Tor is a technology and a network that is intended to help provide and enable anonymity for users. With Tor, traffic travels through a number of different network hops to an eventual exit point in the hope of masking where the traffic originated from. Podgorski said that there are some users that choose to install a Tor browser on their mobile devices, but thats not the problem. The problem is that Tor is being installed by mobile applications without user knowledge and potentially putting users at risk.
The researchers explained that they set up several Tor exit nodes, just to see what they could find, and the results were surprising. The researchers found that approximately 30% of all Android devices are transmitting data over Tor.
Youre probably scratching your head now, like we were a couple of months ago, because that doesnt make any sense, Podgorski said. There's no way a third of Android users know what Tor is and are actually using it.
What the researchers determined is that Tor is being bundled, embedded and installed in other applications and users are not aware of its existence. It was not entirely clear to the researchers why Tor was being bundled with so many applications. Podgorski said that it could be due to a misunderstanding of the technology and how it can be used. Tor was also found on Apple IOS devices, but the numbers were smaller with only approximately 5% of devices sending data.
In a series of demonstrations, including live dashboards shown by Bhargava, the researchers showed what data they had collected from mobile users that were inadvertently using Tor. The data included GPS coordinates, web addresses, phone numbers, keystrokes and other PII.
This data can be used to build a robust profile of an individual, Podgorski said.
Bhargava explained that the exit nodes the researchers set up intentionally attempted to force browsers to not use encrypted versions of websites, forcing the devices to regular HTTP when possible. With data coming to the exit node without encryption, it was possible for the researchers to see the user data. Bhargava noted that for sites that force HTTPS encryption and do not offer any fallback option to regular un-encrypted HTTP, they wouldnt be able to see the users data.
Also of note, Bhargava admitted that he found his own phone number in the data, which was a surprise to him, as he had not installed Tor on his device. The only applications on his phone were applications installed by the carrier.
There are several things that need to happen to fix the issue. Podgorski said that the first is awareness that there is a problem, which is what the research is intended to highlight for legislators, government and organizations. For users, Podgorski emphasized that good operational security practices need to be employed, by using encryption everywhere.
In Podgorski's view, there is already a legal compliance risk that the mobile application PII data leaks expose.
Were pretty sure what we found breaches GDPR on multiple levels, he said, but the issue is that governments cant enforce the law if theyre not aware.
- Tor Browser download | SourceForge.net - December 2nd, 2019
- Teejayx6 Will Steal Your Identityand Rap About It - WIRED - December 2nd, 2019
- Such as the struggle of the Venezuelan economy, some residents turn to a lucrative gig: Cybercrime - Herald Journalism 24 - December 2nd, 2019
- Smart users guide to the snooping game - Livemint - November 17th, 2019
- Privacy on your smartphone: how to protect your data - AndroidPIT - November 17th, 2019
- BBC News heads to the dark web with new Tor mirror - The Verge - October 27th, 2019
- The Tor Project releases Tor Browser 9.0 with several UX improvements - Neowin - October 27th, 2019
- Fraudulent Tor Browser Spies and Has Been Stealing The Bitcoins - GoodTime Nation - October 27th, 2019
- OnionShare Lets Anyone Host Anonymous Sites on the Dark Web - BleepingComputer - October 16th, 2019
- Is there anything we can do to stop someone spying on us? - Newstalk 106-108 fm - August 25th, 2017
- If you're really concerned about browser security, Incognito isn't enough - TechRepublic - August 20th, 2017
- The Daily Stormer has lost its lease, accessible only via Tor browser - The Moderate Voice - August 20th, 2017
- Tor Project 'disgusted' by Daily Stormer, defends software ethos - CNET - August 18th, 2017
- Neo-Nazi site Daily Stormer resurfaces with Russian domain following Google and GoDaddy bans - Vox - August 16th, 2017
- Tor Browser 7.0.4 Download - TechSpot - August 14th, 2017
- Debian-Based Tails 3.1 Anonymous OS Debuts with Tor Browser 7.0.4, Linux 4.9.30 - LXer (press release) - August 11th, 2017
- Tails 3.1 has been released but you'll need to do a manual upgrade - Neowin - August 10th, 2017
- China and Russia go further in squelching Internet freedom - Washington Post - August 10th, 2017
- The FBI Booby-Trapped a Video to Catch a Suspected Tor ... - Motherboard - August 9th, 2017
- Major Improvements Are Coming Soon to the Tor Browser - The Merkle - August 8th, 2017
- The Attack on Global Privacy Leaves Few Places To Turn - WIRED - August 4th, 2017
- Tor Co-Founder: There Is No Dark Web The Merkle - The Merkle - August 3rd, 2017
- Online privacy protection - Choice - CHOICE - August 2nd, 2017
- There Is Basically No Dark Web. It's Only A Few Webpages TOR Co-founder - Fossbytes - July 31st, 2017
- How to Install Tor Browser for Mac and Protect Your Online Activity - iDrop News - July 29th, 2017
- How to get around an ISP blocking a website - MyBroadband - July 26th, 2017
- Don't blame online anonymity for dark web drug deals. - Slate Magazine (blog) - July 26th, 2017
- Tor network will pay you to hack it through new bug bounty program ... - ZDNet - July 21st, 2017
- Tor Project to launch public bug bounty project - CIO Dive - July 21st, 2017
- How to access the dark web - The Daily Dot - July 20th, 2017
- Your Mailman Is a Drug Dealer. He Just Doesn't Know It. - WNYC - July 20th, 2017
- Want porn? Prove your age (or get a VPN) Naked Security - Naked Security - July 20th, 2017
- Suspected AlphaBay founder dies in Bangkok jail after shutdown of online black market - Washington Post - July 19th, 2017
- S. Sudan blocks Sudan Tribune website over hostile coverage - Sudan Tribune - July 19th, 2017
- Assassins and child porn; a darknet offers everything - The Slovak Spectator - July 19th, 2017
- Apple users warned of dangerous new Mac malware that steals banking credentials - ThaiVisa News - July 18th, 2017
- The best security apps to lock down your Android phone - The Daily Dot - July 14th, 2017
- Mozilla is held to a higher standard - Ghacks Technology News - July 14th, 2017
- Privacy blunder? Firefox's Get Add-ons page uses Google Analytics - Ghacks Technology News - July 13th, 2017
- Russia, China vow to kill off VPNs, Tor browser - The Register - July 11th, 2017
- How to safely search the deep web - The Age - The Age - July 11th, 2017
- ACLU's Gillmor on privacy: 'We pay for what we value' (Q&A) - The Parallax (blog) - July 10th, 2017
- What is Tor browser, and is it safe? | Komando.com - July 7th, 2017
- Darknet 101: Your guide to the badlands of the internet - CNET - CNET - July 5th, 2017
- In Reporting on North Korea, Tech Helps Break Through Secrecy - New York Times - July 5th, 2017
- How to safely search the deep web - The Sydney Morning Herald - July 5th, 2017
- TOR Browser - darkwebnews.com - July 5th, 2017
- How To Search The Deep Web Safely - Gizmodo Australia - July 5th, 2017
- Burleson man convicted of accessing child porn from dark website - Fort Worth Star Telegram - July 4th, 2017
- Here Brazilian Journalists Learn Privacy for Themselves and Their Sources - Brazzil.com - June 30th, 2017
- Purism aims to push privacy-centric laptops, tablets and phones to market - Computerworld - June 29th, 2017
- Brazilian site teaches journalists how to protect sources and personal data from digital attacks - Knight Center for Journalism in the Americas (blog) - June 29th, 2017
- The best ways to make your search private in 2017 - KnowTechie - June 28th, 2017
- Bill regulating online anonymizers unanimously passes first ruling in Russian Duma - Washington Times - June 24th, 2017
- The Burger King Ad That Activated Google Home Just Won A Prestigious Award - XDA Developers (blog) - June 24th, 2017
- Mozilla's new Android browser blocks ads and trackers - Boing Boing - June 22nd, 2017
- Secure OS Tails 3.0 Launches With Debian 9 Base, Redesigned ... - Tom's Hardware - June 15th, 2017
- Tails OS hits version 3.0, matches Debian's pace but bins 32-bit systems - The Register - June 14th, 2017
- Tor Browser 7.0 is released | The Tor Blog - June 10th, 2017
- Tor Browser 7.0 works harder to protect your anonymity on its own - Engadget - June 10th, 2017
- Tor Browser 7.0 released - gHacks Tech News - Ghacks Technology News - June 8th, 2017
- Tor Browser 7.0 arrives with multiprocess mode, content sandbox, and Unix domain sockets - VentureBeat - June 7th, 2017
- Wikipedians Want to Put Wikipedia on the Dark Web - Motherboard - June 7th, 2017
- What The Dark Web Is And How To Access It - Komando - June 3rd, 2017
- What is Deep Web and How is it Different from Dark Web - Guiding Tech (blog) - June 1st, 2017
- If You Think WannaCry is Huge, Wait for EternalRocks - Data Center Knowledge - June 1st, 2017
- DOJ, FBI Executives Approved Running a Child Porn Site - Motherboard - May 30th, 2017
- What is Tor, How It Works And Where to Download the Tor Browser? Everything You Need To Know - MobiPicker - May 30th, 2017
- WannaCry 2.0: EternalRocks author calls it quits - TheINQUIRER - The INQUIRER - May 28th, 2017
- Data For Sale: What Everyday Consumers Can Do To Keep Their Info Safe - Forbes - May 26th, 2017
- Fearing surveillance in the age of Trump, activists study up on digital anonymity - Washington Post - May 26th, 2017
- EternalRocks Attack Spreads While Using Same Exploit As WannaCry Ransomware - Yahoo News UK - May 23rd, 2017
- Tor browser for Android that is better than Orfox is in the works - Android Kenya (blog) - May 23rd, 2017
- Organizations Can Combat WannaCry & Jaff Ransomware With Well Instrumented DNS - Techzone360 - May 23rd, 2017
- This Spy App Can See If You've Visited Whistleblowing Sites on the Dark Web - Motherboard - May 20th, 2017
- Why Nigerian CIOs should care about the dark web - ITWeb Africa - May 20th, 2017
- A hack has put data of 17 million Zomato users at risk: Should India be worried? - DailyO - May 20th, 2017
- New Jaff Ransomware Part Of Active Necurs Spam Blitz - Threatpost - May 13th, 2017
- Three vulnerabilities allow spies to detect Tor browsers - Cloud Pro - May 9th, 2017
- Tor Browser - TechRadar - May 6th, 2017