Operation Triangulation Used Four Zero-Days to Spy on iPhones
Researchers disclosed Operation Triangulation, an iPhone espionage campaign that infected devices through iMessage and deployed a sophisticated spyware implant on iOS. Reporting tied the operation to a chain of four zero-day vulnerabilities, including flaws in Apple’s processing of messages and a hardware-based feature that enabled attackers to bypass protections that were largely undocumented outside Apple. Kaspersky said the malware targeted iPhones used by its employees, while later technical analysis and conference presentations detailed how the implant gained code execution, escalated privileges, and maintained stealth on compromised devices.
The campaign quickly drew geopolitical attention after Russian authorities accused Apple of cooperating with the NSA in the spying operation, an allegation that was widely reported but not substantiated by public technical evidence. Subsequent coverage focused on the exploit kit sometimes referred to as Coruna, with Kaspersky later saying it had found no signs that the toolkit was created by the United States. The case remains notable for showing that attackers combined multiple iOS zero-days with obscure Apple hardware behavior to build a highly advanced surveillance platform against iPhone users.

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How this story unfolded
6 events from the most recent confirmed update back to the earliest known activity.
Kaspersky rejects claims that the Coruna iPhone exploit kit was made by the US
In March 2026, Kaspersky said it had found no signs that the Coruna exploit framework associated with Operation Triangulation had been developed by the United States. The statement represented a later attribution-related update to the long-running investigation.
Analysis reveals Triangulation used four zero-days and a hardware feature
Late-2023 and early-2024 reporting said the iPhone spyware campaign relied on four zero-day vulnerabilities and abused an Apple hardware-based feature that had been largely undocumented. These findings significantly deepened understanding of the sophistication of the exploit chain.
Researchers present deeper technical findings on Operation Triangulation
At the end of 2023, researchers publicly shared additional analysis of Operation Triangulation, including more detail on the exploit chain and how attackers compromised researchers' iPhones. This marked a broader technical disclosure beyond the initial June reporting.
Researchers publish a report detailing Operation Triangulation's spyware implant
A June 2023 report exposed technical details of the Operation Triangulation implant targeting iOS devices, describing the infection chain and spyware capabilities. The disclosure expanded public understanding of how the campaign operated on compromised iPhones.
Russia accuses Apple and the NSA over the iPhone spying campaign
Russian authorities publicly alleged that Apple had cooperated with the NSA in a spying operation involving infected iPhones, while Kaspersky said it had found evidence of targeted compromises but did not attribute the campaign to Apple. The accusation brought Operation Triangulation into wider public view.
Kaspersky detects iPhone compromise inside its corporate network
Kaspersky reported discovering that several employees' iPhones had been infected by a previously unknown iOS spyware campaign later named Operation Triangulation. The company said the attack used invisible iMessage-delivered exploits and affected devices running recent iOS versions.
Sources
7 references tracked. Mallory keeps watching after this page renders.
Kaspersky: No signs Coruna iPhone exploit kit made by US
theregister.com
Open sourceNew iPhone Exploit Uses Four Zero-Days - Schneier on Security
schneier.com
Open source"Triangulation" iPhone spyware used Apple hardware exploits unknown to almost everyone | TechSpot
techspot.com
Open sourceOperation Triangulation - media.ccc.de
media.ccc.de
Open sourceNew Report Exposes Operation Triangulation's Spyware Implant Targeting iOS Devices
thehackernews.com
Open sourceRussian government accuses Apple of colluding with NSA in iPhone spy operation | CyberScoop
cyberscoop.com
Open sourceTriangulation: Trojan for iOS | Kaspersky official blog
kaspersky.com
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