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Starlink users targeted by Israeli ad firm in suspected surveillance campaign

By Raphael Satter WASHINGTON, Oct 27 (Reuters) - Experts at a digital defense firm recently found that an Israeli ad tech company was heavily targeting users ofStarlink's satellite internet service in a likely effort to spy on them, according to six people familiar with the matter.

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An Israeli digital advertising company has extensively targeted users of the Starlink satellite network in an apparent effort to pinpoint their locations and monitor their online activity, according to cybersecurity specialists and people familiar with the situation.

Analysts at TrendAI, a research arm of Tokyo-based cybersecurity provider Trend Micro, determined that Discover-Tech was among the primary sources of commercial web ads directed at people connecting via SpaceX's satellite service. The researchers concluded the activity was likely aimed at tracking the whereabouts of users.

According to internal telemetry examined by the researchers, Discover-Tech emerged as the leading bidder for digital ad placements on Starlink traffic across more than 100 nations. Those included several jurisdictions where the satellite service is formally prohibited or heavily curbed. Digital ad bidding involves automated real-time auctions that allow advertisers to display marketing materials inside mobile apps and web browsers.

TrendAI issued a study on the activity on October 15, identifying the entity behind the campaign under the pseudonym Shadow-Earth-79 rather than naming Discover-Tech directly. Six people familiar with the investigation confirmed that the moniker referred to the Israeli firm. TrendAI said in a statement that its naming practices aim to minimize errors, prevent inflated labels, and avoid naming decisions that could confuse system defenders.

However, five people familiar with internal deliberations noted that TrendAI researchers originally considered identifying Discover-Tech outright before company executives decided against it due to legal worries.

Discover-Tech and its chief executive did not respond to requests for comment, nor did SpaceX.

Tracking Starlink hardware has drawn mounting interest from security services and governments worldwide. Because the terminals connect through SpaceX orbiters rather than domestic telecom infrastructure, users can bypass government internet blocks and operate in war zones. The satellite technology has become vital in Ukraine, where forces depend on it for communication on the front lines and for steering drone operations.

On the same date TrendAI published its findings, Canadian watchdog Citizen Lab and New York tech firm Confiant publicly named Discover-Tech in a separate investigation. Both organizations stated that the enterprise exploited auction mechanisms to harvest data generated during the bidding process. Over time, that information can be combined with other digital breadcrumbs to identify individual users and potentially expose them to surveillance tools.

Citizen Lab and Confiant found that promotional banners connected to the firm had appeared inside sensitive corporate, media, and governmental networks. Major tech firms including Google and Comcast have since booted Discover-Tech from their advertising systems.

TrendAI's report highlighted unusual bidding behavior, suggesting the setup functioned as surveillance infrastructure rather than a standard commercial business. The entity ranked as the top online ad buyer in conflict zones such as Yemen, Syria, Libya, and South Sudan, and was second in Afghanistan, despite minimal market demand for legitimate commercial promotions in those regions.

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Explained: catch up on this storyWhat are the latest global cybersecurity and surveillance threats?Global authorities and security researchers have exposed a series of major digital threats, including covert advertising surveillance networks, autonomous AI intrusions, ransomware linked to patient fatalities, and internal espionage at top tech firms.Read the explainer →

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