Latest cybersecurity reporting from selected sources.

The U.S. offers up to $10M for information on Russian hackers targeting Signal and WhatsApp accounts of officials and journalists. The U.S. government is offering rewards of up to $10 million for information leading to the identification of members of the Russian-linked groups UNC5792 and UNC4221. The hackers target government officials, military personnel, journalists, and […]

The U.S. Department of State is offering up to $10 million for information that helps identify or locate members of the UNC5792 and UNC4221 hacker groups, which are linked to Russia's intelligence and military services. [...]

Also, Kali365 Bypasses MFA, Silent Ransom Group Makes Office CallsThis week, active duty troops tracked, Kali365 bypassed MFA, Australian lawmakers phished on WhatsApp, Silent Ransom escalated IT scams, Lithuania and German hospitals disclosed breaches, pro-Russian infrastructure providers arrested, CISA warned of active LiteSpeed exploitation.

Threat actors affiliated with Russian Intelligence Services are conducting phishing campaigns to compromise commercial messaging applications (CMAs) like WhatsApp and Signal to seize control of accounts belonging to individuals with high intelligence value, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) and Federal Bureau of Investigation (FBI) said Friday

The FBI has issued a public service announcement warning that Russian intelligence-linked threat actors are actively targeting users of encrypted messaging apps such as Signal and WhatsApp in phishing campaigns that have already compromised thousands of accounts. [...]

Also, More ClickFix Attacks and Teen Booters Arrested in PolandThis week, Russian hackers targeted Signal and WhatsApp users, permit-fee phishing hit U.S. applicants, ClickFix on WordPress sites, Microsoft patched 80 bugs, a 14K-router botnet, Polish teens held over DDoS tools and Finland warned of Russian, Chinese espionage. North Korean IT workers for hire.

Dutch intelligence reveals Russian state hackers are trying to hijack the Signal and WhatsApp accounts of key targets

Russian state-sponsored hackers have been linked to an ongoing Signal and WhatsApp phishing campaign targeting government officials, military personnel, and journalists to gain access to sensitive messages. [...]

Dutch spies flag large-scale campaign to hijack secure messaging accounts Russian-linked hackers are trying to break into the Signal and WhatsApp accounts of government officials, journalists, and military personnel globally – not by cracking encryption, but by simply tricking people into handing over the keys.…

The Russian government is attempting to block WhatsApp in the country as its crackdown on communication platforms not under its control intensifies. [...]

The Computer Emergency Response Team of Ukraine (CERT-UA) has disclosed details of new cyber attacks targeting its defense forces with malware known as PLUGGYAPE between October and December 2025

A rapidly evolving Android spyware campaign called ClayRat has targeted users in Russia using a mix of Telegram channels and lookalike phishing websites by impersonating popular apps like WhatsApp, Google Photos, TikTok, and YouTube as lures to install them

Multiple suspected Russia-linked threat actors are "aggressively" targeting individuals and organizations with ties to Ukraine and human rights with an aim to gain unauthorized access to Microsoft 365 accounts since early March 2025

Cheap Android smartphones manufactured by Chinese companies have been observed pre-installed with trojanized apps masquerading as WhatsApp and Telegram that contain cryptocurrency clipper functionality as part of a campaign since June 2024

Russian nation-state actor Star Blizzard has been running a new spear-phishing campaign to compromise WhatsApp accounts of targets in government, diplomacy, defense policy, international relations, and Ukraine aid organizations. [...]

FSB cyberspies venture into a new app for espionage, Microsoft says Star Blizzard, a prolific phishing crew backed by the Russian Federal Security Service (FSB), conducted a new campaign aiming to compromise WhatsApp accounts and gain access to their messages and data, according to Microsoft.…

The Russian threat actor known as Star Blizzard has been linked to a new spear-phishing campaign that targets victims' WhatsApp accounts, signaling a departure from its longstanding tradecraft in a likely attempt to evade detection

Meta has disclosed that it disrupted two of the largest known covert influence operations in the world from China and Russia, blocking thousands of accounts and pages across its platform

The Russia-linked threat actor known as Gamaredon has been observed conducting data exfiltration activities within an hour of the initial compromise

Meta Platforms disclosed that it took down no less than 200 covert influence operations since 2017 spanning roughly 70 countries across 42 languages