Czech NÚKIB Confirms Signal Breach as Russian Attacks Hit Five NATO Nations

The Czech Republic's NÚKIB confirmed that Russian-linked actors compromised Signal accounts inside the country, becoming the fifth Western agency to attribute the campaign. Signal's encryption remains intact — attackers swap QR codes during device linking; roughly 300 political accounts were hit in Germany alone.

• NÚKIB is the fifth agency to confirm Russian attacks on Signal
• Signal's encryption is intact; attackers swap device-linking QR codes
• About 300 political accounts compromised in Germany
• GTIG tied the campaign to four clusters: APT44, UNC5792, UNC4221, Turla