Latest cybersecurity reporting from selected sources.

A suspected Chinese state-backed hacking group has been quietly exploiting a critical Dell security flaw in zero-day attacks that started in mid-2024. [...]

A China-linked hacking group is exploiting a Windows zero-day in attacks targeting European diplomats in Hungary, Belgium, and other European nations. [...]

Williams & Connolly Hit in Zero-Day Campaign Impacting Client EmailsA zero-day vulnerability was used to breach email accounts at the elite D.C. law firm Williams & Connolly, with officials reportedly suspecting the hack is part of a China-linked campaign targeting the U.S. legal sector to support espionage, steal intelligence and establish long-term access routes.

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. [...]

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.

The French cybersecurity agency on Tuesday revealed that a number of entities spanning governmental, telecommunications, media, finance, and transport sectors in the country were impacted by a malicious campaign undertaken by a Chinese hacking group by weaponizing several zero-day vulnerabilities in Ivanti Cloud Services Appliance (CSA) devices

At least 11 state-backed hacking groups from North Korea, Iran, Russia, and China have been exploiting a new Windows vulnerability in data theft and cyber espionage zero-day attacks since 2017. [...]

The China-lined threat actor behind the zero-day exploitation of security flaws in Microsoft Exchange servers in January 2021 has shifted its tactics to target the information technology (IT) supply chain as a means to obtain initial access to corporate networks

Hackers Reportedly Exploited Barracuda ESG Zero-DayThe Belgian government opened a federal probe into a suspected Chinese espionage campaign targeting the country's civilian intelligence service. The attack on the Belgian government aligns with the broader Chinese strategy of compromising edge devices for stealth espionage campaigns.

Tianfeng Guan Allegedly Developed Zero-Day Exploit of Sophos XG FirewallThe U.S. federal government rolled out its heavy guns Tuesday against a Chinese hacker allegedly at the center of a zero-day exploit used to hack firewalls made by Sophos, unsealing an indictment, rolling out sanctions and offering $10 million for information leading to the suspect's arrest.

The Chinese state-backed hacking group Volt Typhoon is behind attacks that exploited a zero-day flaw in Versa Director to upload a custom webshell to steal credentials and breach corporate networks. [...]

Government Nurtures Homegrown Talent and Hack-for-Hire Ecosystem, Research FindsChina boasts many of the world's most talented zero-day vulnerability researchers as well as a strict cybersecurity law compelling individuals to assist the state, and the government doesn't appear to shy away from using both those facts to its advantage, a new research study finds.

Outdated Software, Exploited Flaws, Security Loopholes Expose Ivanti's DevicesSupply chain security firm Eclypsium found corporate VPN maker Ivanti's Pulse Secure devices - which underwent much emergency patching amid a likely Chinese espionage zero-day hacking campaign - operate on an 11-year old version of Linux and use many obsolete software packages.

Beijing Used FortiGate Vulnerability to Install TrojanChinese espionage hackers penetrated Dutch military systems in early 2023, using a zero-day exploit in a Fortinet virtual private network to obtain access, Netherlands intelligence agencies disclosed Tuesday. They attributed the hacking to Chinese state actors with high confidence.

Company Starts Patch Rollout for Flaws Exploited by Likely Chinese Intelligence OpCorporate VPN maker Ivanti on Wednesday began a belated patch rollout for zero-day flaws that many cybersecurity firms say paved the way for an espionage hacking operation likely conducted by China. Ivanti also disclosed two more zero-days and told customers that hackers are exploiting one of them.

A Chinese hacking group has been exploiting a critical vCenter Server vulnerability (CVE-2023-34048) as a zero-day since at least late 2021. [...]

A pair of zero-day flaws identified in Ivanti Connect Secure (ICS) and Policy Secure have been chained by suspected China-linked nation-state actors to breach less than 10 customers

A suspected Chinese-nexus hacking group exploited a recently disclosed zero-day flaw in Barracuda Networks Email Security Gateway (ESG) appliances to breach government, military, defense and aerospace, high-tech industry, and telecom sectors as part of a global espionage campaign

VMware patched today a VMware ESXi zero-day vulnerability exploited by a Chinese-sponsored hacking group to backdoor Windows and Linux virtual machines and steal data. [...]

The zero-day exploitation of a now-patched medium-security flaw in the Fortinet FortiOS operating system has been linked to a suspected Chinese hacking group