Latest cybersecurity reporting from selected sources.

Microsoft says that Storm-1175, a China-based financially motivated cybercriminal group known for deploying Medusa ransomware payloads, has been deploying n-day and zero-day exploits in high-velocity attacks. [...]

Also, Telus Breach, Microsoft Hotpatching, Interpol Malicious IP TakedownThis week, Russian hacker OpSec failure, Interpol helped disrupt 45,000 malicious IPs, the FBI is looking for an ATM jackpotting suspect and Telus disclosed a breach. Windows hotpatching, an FTP exploit, a foiled attack on a nuclear research center and China-linked espionage.

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

A China-affiliated threat actor known as UNC6384 has been linked to a fresh set of attacks exploiting an unpatched Windows shortcut vulnerability to target European diplomatic and government entities between September and October 2025

A new UNC6384 campaign highlights the threat actor’s growing sophistication and geographic expansion

Threat actors with ties to China exploited the ToolShell security vulnerability in Microsoft SharePoint to breach a telecommunications company in the Middle East after it was publicly disclosed and patched in July 2025

Defrauding search with custom malware, Potato-family exploits A new China-aligned cybercrime crew named GhostRedirector has compromised at least 65 Windows servers worldwide - spotted in a June internet scan - using previously undocumented malware to juice gambling sites' rankings in Google search, according to ESET researchers.…

Better late than never after SharePoint assault? Microsoft has reportedly stopped giving Chinese companies proof-of-concept exploit code for soon-to-be-disclosed vulnerabilities following last month's SharePoint zero-day attacks, which appear to be related to a leak in Redmond's early-bug-notification program.…

Spy vs. spy China has accused US intelligence agencies of exploiting a Microsoft Exchange zero-day exploit to steal defense-related data and take over more than 50 devices belonging to a "major Chinese military enterprise" for nearly a year.…

A Chinese hacking group is deploying Warlock ransomware on Microsoft SharePoint servers vulnerable to widespread attacks targeting the recently patched ToolShell zero-day exploit chain. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA), on July 22, 2025, added two Microsoft SharePoint flaws, CVE-2025-49704 and CVE-2025-49706, to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation

But Hacking Groups of All Stripes Now Have Access to Exploit Code, Researchers WarnMicrosoft said an attack campaign targeting zero-day vulnerabilities in on-premises SharePoint servers appears to have begun by July 7, tied to three Chinese hack groups. With proof-of-concept exploit code now in the wild, security experts said hackers of all stripes have joined the fray.

Microsoft has formally tied the exploitation of security flaws in internet-facing SharePoint Server instances to two Chinese hacking groups called Linen Typhoon and Violet Typhoon as early as July 7, 2025, corroborating earlier reports

Cybersecurity researchers have shed light on a previously undocumented threat actor called NightEagle (aka APT-Q-95) that has been observed targeting Microsoft Exchange servers as a part of a zero-day exploit chain designed to target government, defense, and technology sectors in China

NVISO discovered new variants of the BRICKSTORM backdoor, initially designed for Linux, on Windows systems

'Only' a local access bug but important part of N Korea, Russia, and China attack picture An exploitation avenue found by Trend Micro has been used in an eight-year-long spying campaign, but there's no sign of a fix from Microsoft, which apparently considers this a low priority.…

They're good at zero-day exploits, too Silk Typhoon, the Chinese government crew believed to be behind the December US Treasury intrusions, has been abusing stolen API keys and cloud credentials in ongoing attacks targeting IT companies and state and local government agencies since late 2024, according to Microsoft Threat Intelligence.…

Mustang Panda Uses MAVInject to Evade Antivirus DetectionA Chinese state-sponsored hacking group is abusing a legitimate Microsoft tool to evade security and install backdoors on government systems in the Asia-Pacific region. The threat actor uses MAVInject.exe to inject malware into waitfor.exe.

The Chinese state-sponsored threat actor known as Mustang Panda has been observed employing a novel technique to evade detection and maintain control over infected systems

No word on when or if the issue will be fixed Chinese government-linked snoops are exploiting a zero-day bug in Fortinet's Windows VPN client to steal credentials and other information, according to memory forensics outfit Volexity.…