alt Hacker NewsHow does this actually work? Are they talking about browser fingerprinting or something else?
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There is a tinfoil narrative that suggest that entire formats are in bed with intelligence services. It sounds pretty wild, but other zero-click attack vectors have been possible through sabotaging the parsing of file formats. ie. send a message -> hacked. How? the message wasnt even opened. How is, an app like Messenger receives a photo attachment binary, tries to unpack it and in doing so receives an instruction that stops the parser and executes arbitrary instructions.
Here is a better article https://citizenlab.ca/research/how-discover-tech-turned-targ...
They use ad network to try to target individual user visiting a page (eg you know your target is a male, 60 years old, living in that area, with a few other checks you can almost uniquely identify your target)
Then the ad network delivers a targeted ad that exploits a vulnerability (eg a broken JPEG decoder that, when sent a bad image, allows to run arbitrary code on your machine), and from there you have access to the computer
If I had to ponder a guess…
It’s to do with hiding malware/spyware in an image which ends up in your cache on device. I can’t go much further into details but all this takes is for you to visit a site that serves it via ad network.
Israel has been known to have some sneaky spyware in the past with Pegasus.
How the ad-based spyware actually worked (from the Citizen Lab and Confiant reports):
- It came in through the front door. Discover-Tech ran its own ad-buying platform and was listed as a "certified" vendor by Google and IAB Europe for six years. Nothing was hacked to get in. It bid in ad auctions like any other buyer.
- The ads looked harmless. Plain banners for games, AliExpress deals and an IP-lookup site. Hidden inside each one was a small script that quietly phoned home when the ad loaded.
- Everyone who saw an ad was profiled. The script collected device details, IP addresses and, on many sites, the publisher's own cookies, sometimes including logged-in session tokens. Cookie-syncing with other ad networks built a huge identity graph.
- Only chosen targets got the payload. A gatekeeper server checked each device's ad ID and IP. Most people got nothing back. A selected target got code that handed them off to spyware maker Candiru, and the code was served only once, which made it very hard for researchers to capture.
- The handoff was built to defeat inspection. Encrypted channels, rotating hosting, anti-bot checks and even a fake "Copyright Google" comment to fool human reviewers.
- It worked. At least 45 devices at Al Jazeera were targeted, and spyware was recovered from an infected machine. Its ads also appeared on networks belonging to NATO, the UN, the European Parliament, the ICC and various defence ministries.
- The scale was huge. Billions of bids and ads in nearly 200,000 apps and websites, including Duolingo, Viber, Yahoo Mail, dating apps and period trackers, yet almost no sign of real advertisers or revenue.
Citizen Lab: https://citizenlab.ca/research/how-discover-tech-turned-targ...
Confiant: https://blog.confiant.com/p/adint-weaponized-ad-tech-for-zer...
Citizen Lab also has a shorter executive summary: https://citizenlab.ca/research/exposing-adfection-executive-...
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Looks like it's much worse, they get more information due to exploits, and they can take full control of your machine.
Article on the CitizenLab website: https://citizenlab.ca/research/how-discover-tech-turned-targ...