Latest cybersecurity reporting from selected sources.

Attacks also used a compromised chatbot in campaign to steal sensitive information from Business Users

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter More Than 4,000 Legacy Routers Compromised by AryStinger, Turned into Global Attack Proxies for Hackers   A VBScript campaign distributed through WhatsApp deploying RMM software  Lost in relocation: analysis of a new loader distributing CASTLESTEALER   […]

A newly discovered Vietnamese-linked operation has been observed using a Google AppSheet as a "phishing relay" to distribute phishing emails with an aim to compromise Facebook accounts

A nascent Android remote access trojan called Mirax has been observed actively targeting Spanish-speaking countries, with campaigns reaching more than 220,000 accounts on Facebook, Instagram, Messenger, and Threads through advertisements on Meta

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. [...]

Research analyzing 4,700 leading websites reveals that 64% of third-party applications now access sensitive data without business justification, up from 51% in 2024.  Government sector malicious activity spiked from 2% to 12.9%, while 1 in 7 Education sites show active compromise

Water Saci has upgraded its self-propagating malware to compromise banks and cryptocurrency exchanges by targeting enterprise users of the popular chat app.

Attackers sidestep encryption with spoofed apps and zero-click exploits to compromise 'high-value' mobile users CISA has warned that state-backed snoops and cyber-mercenaries are actively abusing commercial spyware to break into Signal and WhatsApp accounts, hijack devices, and quietly rummage through the phones of what the agency calls "high-value" users.…

CTM360 has identified a rapidly expanding WhatsApp account-hacking campaign targeting users worldwide via a network of deceptive authentication portals and impersonation pages. The campaign, internally dubbed HackOnChat, abuses WhatsApp’s familiar web interface, using social engineering tactics to trick users into compromising their accounts

Attackers compromise hospitality providers with an infostealer and RAT malware and then use stolen data to launch a phishing attacks against customers via both email and WhatsApp.

NSO Group Blocked From WhatsApp and Must Destroy Code Used to Hack 1,400 DevicesA federal judge issued a permanent injunction barring NSO Group from using or retaining its WhatsApp spyware exploit, citing national security risks and business harm after the manufacturer's tools compromised 1,400 devices - some allegedly linked to journalists and officials.

Trend™ Research has identified an active campaign spreading via WhatsApp through a ZIP file attachment. When executed, the malware establishes persistence and hijacks the compromised WhatsApp account to send copies of itself to the victim’s contacts.

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.…

Malicious Android apps masquerading as Google, Instagram, Snapchat, WhatsApp, and X (formerly Twitter) have been observed to steal users' credentials from compromised devices

Facebook advertisers in Vietnam are the target of a previously unknown information stealer dubbed VietCredCare at least since August 2022

Compromised Facebook business accounts are being used to run bogus ads that employ "revealing photos of young women" as lures to trick victims into downloading an updated version of a malware called NodeStealer

Hackers use a massive network of fake and compromised Facebook accounts to send out millions of Messenger phishing messages to target Facebook business accounts with password-stealing malware. [...]

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