Russia-backed hackers breach Signal, WhatsApp accounts of officials, journalists, Netherlands warnsBy Anthony DeutschMon, March 9, 2026 at 10:09 AM UTC2 min readAdd Yahoo as a preferred source to see more of our stories on Google.

A woman poses for a photo while holding a smartphone in front of a screen showing U.S. messenger app WhatsApp against the backdrop of numerical codes on the state flag of Russia, in this illustration taken February 12, 2026. REUTERS/Ramil Sitdikov/Illustration

By Anthony Deutsch

AMSTERDAM, March 9 (Reuters) - Russian-backed hackers have launched a global cyber campaign to gain access to Signal and WhatsApp accounts ‌used by officials, military personnel and journalists, two intelligence agencies in ‌the Netherlands warned on Monday.

Users are persuaded in chats initiated by the hackers to divulge security ​verification and pin codes, giving them access to personal accounts and group chats, they said in a statement.

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"The Russian hackers have likely gained access to sensitive information," the General Dutch Intelligence Agency (AIVD) and Dutch Military Intelligence and Security Service (MIVD) said.

"Targets and ‌victims of the campaign ⁠include Dutch government employees" and journalists, the agencies said.

The chat apps offering end-to-end encryption are popular with government officials for sharing ⁠confidential or classified information, making them "the ideal place for malicious actors to try to capture sensitive information," they said.

WhatsApp, in a reaction sent to Reuters, said users ​should never ​share their six-digit code with others ​and that it continued to build ‌ways to protect people from online threats.

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Signal could not immediately be reached for comment.

The hackers most frequently masquerade as a Signal Support chatbot to induce targets to divulge the codes, enabling them to take control of the accounts, the statement said.

Another method is to use the ‘linked ‌devices’ function within Signal, it said.

Contacts appearing twice ​in a user's contact list, or numbers showing ​up as 'deleted account' could indicate ​that an account has been compromised, the agencies said.

Dutch authorities ‌issued a cyber advisory notifying government ​colleagues of the vulnerability ​and providing assistance to eliminate the threat, a spokesman said, citing the joint operation with the AIVD general intelligence service.

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"Despite their end-to-end encryption ​option, messaging apps such ‌as Signal and WhatsApp should not be used as channels for classified, ​confidential or sensitive information," said MIVD director, Vice-Admiral Peter Reesink.

(Reporting ​by Anthony Deutsch; Editing by Bernadette Baum)

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