Portugal's national intelligence service (SIS) has issued a warning about a global cyber campaign by foreign state-backed hackers targeting government officials, diplomats, and military personnel through WhatsApp and Signal. The hackers aim to deceive users into sharing sensitive information, potentially compromising privileged communications. While the SIS did not specify the responsible country, it emphasized that these attacks exploit user carelessness rather than platform vulnerabilities. The alert also highlights similar threats from Russian-backed hackers targeting platforms globally, including the Netherlands. Portugal advises vigilance to prevent cyber intrusions involving high-level officials and military personnel.