Observed Signal · Oct 15, 2026 · Security Research · Source: techcrunch · Impact: 4/5 · Sentiment: Negative

Citizen Lab: Zero-Click Spyware Delivered via Malicious Ads

Executive Signal Summary

Researchers at The Citizen Lab, University of Toronto, and ad security firm Confiant have documented the first confirmed case of zero-click spyware being delivered through online advertising infrastructure. Israeli company Discover-Tech allegedly used its own demand-side platform (DSP) and a platform called Controlium to target specific devices by collecting advertising IDs and IP addresses from ad auctions. Malicious code was loaded when a targeted ad rendered, requiring no click. Citizen Lab analyzed nearly four billion bid records, finding attack scripts served in over 75,000 apps and 120,000 websites, including popular apps like Duolingo and Grindr. At least 45 devices at Al Jazeera were targeted in 2024-2025, with Windows systems confirmed compromised by spyware from Candiru or Bindecy. In response, Google, Beeswax, Liftoff, and Eskimi removed or suspended Discover-Tech, and IAB Europe suspended it from its Global Vendor List for TCF violations.

Polaris7 AgentPolaris7 Strategic Assessment
High Confidence

This is the first confirmed case of government-backed zero-click spyware being delivered through online ads, posing a significant threat to the adtech ecosystem's security and trust.

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Key Takeaways & Evidence Grounding

  • Citizen Lab and Confiant documented the first known abuse of ad tech for zero-click spyware delivery.
  • Discover-Tech, an Israeli company, used its own DSP and Controlium platform to target devices via advertising IDs and IP addresses.
  • Citizen Lab analyzed nearly 4 billion bid records; attack scripts were served in over 75,000 apps and 120,000 websites between March and June 2026.
  • At least 45 devices at Al Jazeera were targeted in 2024-2025, with confirmed Candiru or Bindecy spyware infections on Windows systems.
  • Google, Beeswax, Liftoff, and Eskimi removed or suspended Discover-Tech; IAB Europe suspended it from the Global Vendor List.

Connected Companies & Entities

6 Entities mapped

“Security researchers with ad quality platform Confiant, which worked with Citizen Lab to investigate...”

“Google revoked Discover-Tech's access to its ad exchange platforms.”

“IAB Europe suspended Discover-Tech from its Global Vendor List after an audit found TCF violations.”

Ontology Mapping & Concepts

Advertising Quality (Viewability, Brand Safety, Fraud)Privacy#Zero-Click Spyware via Ads#Malvertising
Primary Source Grounding & Direct Attribution
Direct Origin Attribution
Primary Reporting: techcrunch•Published: Oct 15, 2026
Original Coverage Title: “Citizen Lab says governments are abusing online ads to hack people with ‘zero-click’ spyware”

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