Cybercriminals are exploiting expired domain names to distribute malware, a tactic highlighted in a recent security newsletter. The newsletter also covers a range of other threats including zero-day exploits in macOS and GeoServer, a data leak affecting Chess.com users, and attacks targeting Adobe Commerce and SharePoint.

Cybercriminals are increasingly acquiring expired internet domains to host malware and execute other malicious activities, according to recent security reports. This tactic leverages previously legitimate domain names, which can lend an air of trustworthiness to their operations.
The use of expired domains for nefarious purposes is part of a broader landscape of evolving cyber threats. Among these, a notable development is the exploitation of a macOS Screen Sharing vulnerability to deploy Monero cryptocurrency miners on affected systems. This indicates attackers are actively targeting client-side software with known flaws for illicit financial gain.
Another significant concern is the emergence of a zero-day vulnerability in GeoServer, which is already reportedly under active probing by malicious actors. The rapid weaponization of newly disclosed or discovered flaws highlights the urgent need for patching and proactive defense.
Several other vulnerabilities have also come under attack shortly after their public disclosure. These include CVE-2026-71362 affecting Adobe Commerce and CVE-2026-55040 in SharePoint, both of which saw exploits surface quickly. Similarly, SAP Commerce Cloud's CVE-2026-58231 is also being exploited in the wild. The U.S. CISA has added Metabase, Windows, and Cisco Secure Firewall flaws to its Known Exploited Vulnerabilities catalog, underscoring their active exploitation.
In the realm of ransomware, the Storm-1175 group has reportedly replaced its Medusa ransomware variant with a new strain dubbed StormEncryptor. This shift indicates continuous development and adaptation within ransomware operations.
State-sponsored groups also remain active. The North Korean Lazarus Group is implicated in Operation Dream Job, which reportedly utilizes a Windows zero-day exploit. Separately, China-linked hackers are said to be employing AI agents in autonomous attacks targeting Taiwan, signaling a new frontier in cyber warfare.
Beyond these, a new macOS infostealer, AmnesiaStealer, written in Rust, is capable of hijacking Chromium browsers, giving attackers live control over victims' browsing sessions. A new Windows zero-day, dubbed ShieldBreak, has also been identified as bypassing Microsoft's RoguePlanet patch, indicating a persistent cat-and-mouse game between attackers and defenders.
Furthermore, the Kimwolf botnet has evolved to version 7 (Kimwolf v7), now capable of hiding DDoS traffic behind Chrome fingerprints and Ethereum-related activities. This sophistication aims to evade detection and analysis.
Microsoft's August 2026 Patch Tuesday addressed a zero-day vulnerability and a wormable remote code execution flaw, emphasizing the ongoing critical need for regular system updates. Zoom also patched a "Zoomsday" zero-click flaw that could enable remote code execution, highlighting the risks associated with widely used communication platforms.
A weakness has been identified in Tenda CP3 27.5.57.101. This issue affects some unknown processing of the file Net/NetCheckPing.cpp. This manipulation of the argument interface_name/host causes os command injection. The attack can be initiated remotely.
A security flaw has been discovered in Tenda CP3 27.5.57.101. This vulnerability affects the function SystemAsh of the file Apis/system.c of the component Kylin. The manipulation of the argument AlarmVoiceURL results in os command injection. It is possible to launch the attack remotely.

OpenAI has announced a $1 billion commitment to provide subsidized access to its Daybreak AI cybersecurity tools for under-resourced critical infrastructure defenders. The initiative, named Daybreak for Frontline Defenders, will offer AI models, training, and technical support over the next six months, prioritizing water and wastewater utilities, electric grid operators, and local government entities. This move aims to equip organizations with limited budgets and staff against increasingly sophisticated cyber threats.

Attackers are exploiting a new unpatched vulnerability in Magento Open Source and Adobe Commerce that lets them run malicious code on an online store's server without logging in, Dutch e-commerce security company Sansec said in an advisory published on September 5. Sansec, which discovered the flaw and named it StyleSmuggler, said attacks started on September 4. "Sansec is publishing early
In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.

Attackers are exploiting two new PaperCut flaws to steal credentials and gain privileged access in education-sector attacks across the U.S. and Europe. Attackers are exploiting two recelty disclosed PaperCut flaws, CVE-2026-81578 and CVE-2026-82078, in attacks targeting schools and other education organizations in the U.S. and Europe, as reported by TheHackerNews. Arctic Wolf researchers observed