Latest cybersecurity reporting from selected sources.

Microsoft warns of a phishing campaign targeting the hospitality sector with fake guest emails that install TonRAT using resilient persistence. Microsoft Threat Intelligence published a detailed analysis on an ongoing hacking campaign against hospitality organizations that has been running since April 2026. The targets are specific: device names observed across compromised environments include strings like […]

The Russian state-sponsored threat actor known as Turla has been attributed to a previously undocumented .NET backdoor called STOCKSTAY that has been deployed against government and military organizations in Ukraine, and entities that have an interest in Italian foreign policy

Researchers Identified Two Undocumented Variants Used Since 2023Eset uncovered two previously undocumented Windows variants of the China-linked SprySocks backdoor tied to FishMonger and iSoon, revealing expanded espionage capabilities, rootkit-based stealth and continued targeting of government organizations across Asia and Central America.

The North Korean state-sponsored hacking group known as ScarCruft (aka APT37) has been observed using spear-phishing messages impersonating Microsoft Account security notifications to deliver a new malware called NarwhalRAT

A China-nexus cyber espionage group has been observed deploying a BSD variant of a known backdoor called BRICKSTORM, as well as two other malware families codenamed PLENET (aka GRIMBOLT) and AGENTPSD to target Linux systems

The advanced persistent threat group also relied on SOCKS proxies like SoftEther VPN, tunneling tools that act as a middleman between victim and attacker.

A threat actor with affiliations to China has been linked to a "multi-wave intrusion" targeting an unnamed Azerbaijani oil and gas company between late December 2025 and late February 2026, marking an expansion of its targeting

Also, Taiwan Rail Hack, Massive DDoS Attack and Karakurt Jail SentenceThis week, Microsoft Edge exposed passwords, Taiwan police make arrests in high-speed rail hack and a 2.45 billion-request DDoS attack. A Karakurt negotiator jailed, North Korean IT worker scams led to prison terms and France detained a teen over a government data breach. Another Ivanti zero-day.

The Iranian state-sponsored hacking group known as MuddyWater (aka Mango Sandstorm, Seedworm, and Static Kitten) has been attributed to a ransomware attack in what has been described as a "false flag" operation

The North Korea-aligned state-sponsored hacking group known as ScarCruft has compromised a video game platform in a supply chain espionage attack, trojanizing its components with a backdoor called BirdCallto likely target ethnic Koreans residing in China

Microsoft has awarded $2.3 million to security researchers after receiving nearly 700 submissions during this year's Zero Day Quest hacking contest. [...]

Properly Configured Mobile Development Management Tools Can't Wipe Personal DataMobile device management software is having a moment of notoriety after Iran-aligned hacking group Handala used Microsoft Intune to wipe the mobile devices of employees at medical device manufacture Stryker. Tens of thousands of personal devices were likely affected.

Also: Spanish Hacker Granted Russian Asylum, Microsoft Patches Zero-DaysThis week, a CISA warning, Nest footage in Nancy Guthrie case, Signal phishing. Spanish hacker, Russian asylum. Spanish ministry services offline. BYOVD ransomware. The Conduent breach hit Volvo. Microsoft patched zero-days. ZeroDayRAT targeted devices. The SmarterMail breach. Another Fortinet flaw.

Researchers at Check Point link ‘Amarath-Dragon’ attacks to prolific Chinese cyber-espionage operation

The Russia-linked state-sponsored threat actor known as APT28 (aka UAC-0001) has been attributed to attacks exploiting a newly disclosed security flaw in Microsoft Office as part of a campaign codenamed Operation Neusploit

Russia-linked hacking group Fancy Bear is exploiting a brand-new vulnerability in Microsoft Office, CERT-UA says

A spear-phishing campaign tied to the Democratic People's Republic of Korea (DPRK) uses trusted Microsoft infrastructure to avoid detection.

Also, Microsoft Badly Patches LNK Flaw, Australian Sentenced for 'Evil Twin' HackThis week, the React flaw, a belated Windows fix, Defense Secretary Pete Hegseth's Signal group posed operational risk, more North Korean npm packages. An Australian jailed for Wi-Fi "evil twin" crimes. The US FTC will send $15.3 million to Avast users. A London council said attackers stole data.

Microsoft has silently "mitigated" a high-severity Windows LNK vulnerability exploited by multiple state-backed and cybercrime hacking groups in zero-day attacks. [...]

The threat actor known as ToddyCat has been observed adopting new methods to obtain access to corporate email data belonging to target companies, including using a custom tool dubbed TCSectorCopy