Daryna Antoniuk
Russian state-backed hackers are increasingly targeting Signal messenger accounts — including those used by Ukrainian military personnel and government officials — in an effort to access sensitive information that could aid Moscow’s war effort, researchers warn.
Google’s security team said in a report on Wednesday that Signal’s popularity among military personnel, politicians, journalists and activists has made it a prime target for espionage operations. However, other messaging apps, such as WhatsApp and Telegram, have also been targeted by pro-Russian hackers for similar purposes.
Ukrainian state cybersecurity officials have previously warned that Russian hacker groups actively exploit Signal to attack government and defense officials. In these attacks, hackers typically use phishing messages to infect targeted devices with spying malware.
Google has observed similar techniques used by Russian threat actors in attacks on Ukrainian Signal users.
The most novel and widely used technique, according to Google, involves abusing Signal’s legitimate “linked devices” feature, which allows the app to be used on multiple devices simultaneously.
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