Microsoft: Office 2016 and Office 2019 reach end of support next month

Microsoft has issued reminders that Office 2016 and Office 2019 will end support on October 14, 2025, urging users to upgrade to avoid security and compatibility issues. The company also announced the end of support for Windows 10, Exchange 2016, and Exchange 2019, emphasizing the importance of migrating to newer versions like Microsoft 365 Apps, Office 2024, or Office LTSC 2024. #Office2016 #Office2019 #Windows10 #Exchange2016 #Exchange2019

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Shai-Hulud: The novel self-replicating worm infecting hundreds of NPM packages | Sysdig

A supply-chain worm named Shai-Hulud infected roughly 200 NPM packages by adding a postinstall bundle.js that steals credentials, exfiltrates them (via webhook[.]site), creates public GitHub repositories with leaked data, and propagates to other NPM packages using maintainer credentials. Sysdig TRT and Falco/Sysdig Secure detections and mitigations are available and recommended, including package inventory queries, version pinning, credential rotation, and runtime monitoring. #Shai-Hulud #webhook.site

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Shai-Hulud Supply Chain Attack: Worm Used to Steal Secrets, 180+ NPM Packages Hit

A recent supply chain attack dubbed Shai-Hulud compromised over 180 NPM packages and 40 developer accounts, spreading self-replicating malware to steal secrets and propagate further. The attacker used malicious scripts to exfiltrate credentials and create public repositories, significantly impacting the JavaScript ecosystem. #ShaiHulud #NPMSupplyChain…

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UNMASKING A PYTHON STEALER – “XillenStealer”

XillenStealer is an open-source, Python-based information stealer with a GUI builder that harvests system metadata, browser credentials, cryptocurrency wallet files, messaging sessions, and screenshots, then exfiltrates data via a Telegram bot. The builder lowers the barrier for abuse by enabling rapid configuration and compilation of customized builds and is linked to Russian-speaking actors and an ecosystem at xillenkillers[.]ru. #XillenStealer #Telegram

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Going Underground: China-aligned TA415 Conducts U.S.-China Economic Relations Targeting Using VS Code Remote Tunnels

TA415 conducted July–August 2025 spearphishing campaigns against U.S. government, think tank, and academic targets on U.S.-China economic topics, impersonating the Select Committee Chair and the US-China Business Council to distribute password-protected archives that executed an obfuscated Python loader (WhirlCoil) to install VS Code Remote Tunnels for persistent remote access. The actor…

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Apple backports zero-day patches to older iPhones and iPads

Apple has released security updates to patch a zero-day vulnerability (CVE-2025-43300) affecting older iPhones and iPads, which was exploited in highly sophisticated targeted attacks. The flaw involves an out-of-bounds write in the Image I/O framework, leading to potential remote code execution; Apple and WhatsApp have warned about ongoing exploitation. #CVE202543300 #ImageIO #targetedattacks #AppleSecurity

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New FileFix Variant Delivers StealC Malware Through Multilingual Phishing Site

Cybersecurity experts have uncovered a new campaign using FileFix social engineering techniques combined with sophisticated obfuscation to deliver the StealC info stealer malware. The attack leverages convincing phishing sites and abused trusted code hosting platforms to evade detection and infect victims’ systems. #StealC #FileFix #Doppel…

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ChillyHell macOS Backdoor

Jamf Threat Labs analyzed a modular macOS backdoor named ChillyHell that remained notarized since 2021 and uses host profiling, multiple persistence mechanisms, DNS/HTTP C2 channels, and modular tasking including a brute-force module. The report links ChillyHell to prior Mandiant reporting (UNC4487 / MATANBUCHUS context), lists hardcoded C2 IPs and transport methods, and notes Apple revoked the associated developer certificates after disclosure. #ChillyHell #MATANBUCHUS

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