The logo of the Federal Bureau of Investigation (FBI) displayed on the building in Washington, D.C., U.S., November 28, 2025. REUTERS/Nathan Howard

Cyber actors linked to Russia targeting users of messaging apps, FBI says

· CNA · Join

Read a summary of this article on FAST.
Get bite-sized news via a new
cards interface. Give it a try.
Click here to return to FAST Tap here to return to FAST
FAST

WASHINGTON, March 20 : Hackers tied to the Russian intelligence services are targeting users of consumer messaging applications such as Signal, the FBI and U.S. cyber defense agency CISA said on Friday.

In a joint advisory, the FBI and CISA said that the hackers had successfully broken into thousands of such accounts, without going into detail.  

"The activity targets individuals of high intelligence value, such as current and former U.S. government officials, military personnel, political figures, and journalists," the advisory said.

The advisory noted that while the underlying programs and their encryption were not in question, the hackers managed to bypass the apps' security by impersonating security and tricking users into divulging their security codes.

CNA Games

Guess Word
Crack the word, one row at a time

Buzzword
Create words using the given letters

Mini Sudoku
Tiny puzzle, mighty brain teaser

Mini Crossword
Small grid, big challenge

Word Search
Spot as many words as you can
Show More
Show Less

Signal and the Russian embassy in Washington did not immediately respond to requests for comment.

The U.S. alert echoes a warning issued earlier this month by Dutch intelligence officials, who said that Russian-backed hackers had launched ​a global cyber campaign to gain access to Signal and WhatsApp accounts used ‌by officials and other intelligence targets.

In response to that warning, Signal said the hacks were "executed via ⁠sophisticated phishing campaigns, designed to trick users into sharing information" and that its encryption and infrastructure had not been compromised.

Source: Reuters

Newsletter

Week in Review

Subscribe to our Chief Editor’s Week in Review

Our chief editor shares analysis and picks of the week's biggest news every Saturday.

Sign up for our newsletters

Get our pick of top stories and thought-provoking articles in your inbox

Subscribe here

Get the CNA app

Stay updated with notifications for breaking news and our best stories

Download here

Get WhatsApp alerts

Join our channel for the top reads for the day on your preferred chat app

Join here