Windows 11 KB5089573 update released with performance improvements
Microsoft has released the KB5089573 preview cumulative update for Windows 11 versions 25H2 and 24H2, which comes with 30 changes, including performance and reliability improvements. The KB5089573 update is part of the company’s non-security preview schedule, designed to introduce new features and fixes at the end of each month, allowing IT admins and users to test them […]
KnowledgeDeliver flaw exploited as a zero-day to install web shells
Hackers exploited a critical zero-day vulnerability in a server running the KnowledgeDeliver learning management system (LMS) to deploy the Godzilla web shell. The flaw is a deserialization issue tracked as CVE-2026-5426 and can be exploited without authentication. It stems from the use of a shared hardcoded machine key in the web portal configuration across all KnowledgeDeliver customer […]
Charter confirms data breach after ShinyHunters extortion threat
U.S. telecommunications giant Charter Communications has confirmed it suffered a data breach after the ShinyHunters extortion group threatened to leak stolen data unless a ransom is paid. Charter Communications is one of the largest broadband providers in the United States, serving tens of millions of residential and business customers through its Spectrum brand. In a […]
Microsoft Defender can now automatically isolate hacked endpoints
Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to thwart attackers’ attempts to move laterally across the network. This is now available in preview mode and works as part of automatic attack disruption, a feature designed to contain attacks, limit their impact, and provide security teams with more remediation time. […]
CISA orders feds to patch actively exploited Drupal vulnerability
CISA has given U.S. government agencies until Wednesday evening to secure their servers against an SQL injection vulnerability in the Drupal content management system (CMS) that it flagged as actively exploited. Drupal is typically used by large organizations managing massive data structures and multi-site installations, including government entities, educational organizations, major research universities, and high-profile […]
Microsoft: Domain Controller lookup may fail on Windows Server 2016
Microsoft has confirmed a new known issue affecting Windows Server 2016 systems that causes domain controller lookups to fail after installing the KB5087537 May 2026 security update. Windows Server 2016 reached the end of mainstream support in January 2022, but Microsoft has pushed back the extended support end date by 5 years to allow customers to […]
7-Eleven data breach exposes personal information of 185,000 people
The ShinyHunters extortion gang stole the personal information of over 183,000 people after hacking the systems of convenience store chain giant 7-Eleven in April, according to data breach notification service Have I Been Pwned. Founded in 1927, 7-Eleven now operates, franchises, and licenses more than 86,000 stores worldwide, including 13,000 stores in the U.S. and […]
Anthropic’s restricted Claude Mythos model may be coming to Claude Code
Anthropic appears to be preparing for the public rollout of “Mythos,” which was announced in April as a restricted model that poses major security risks to private and public software. On April 7, Anthropic announced the Mythos in early preview and called it a new frontier model with strikingly advanced capabilities in computer security tasks. Anthropic […]
FBI warns of Kali365 phishing service targeting Microsoft 365 accounts
The FBI is warning about the Kali365 phishing-as-a-service platform (PhaaS) that is used to hijack Microsoft 365 accounts by abusing OAuth device code authentication to steal session tokens and bypass multi-factor authentication (MFA). According to the FBI PSA, Kali365 first emerged in April 2026 and is distributed via Telegram channels for cybercriminals seeking an easier way […]
Ghost CMS SQL injection flaw exploited in large-scale ClickFix campaign
A large-scale campaign is exploiting a critical SQL injection vulnerability (CVE-2026-26980) in Ghost CMS to inject malicious JavaScript code that triggers ClickFix attack flows. The campaign was discovered by XLab threat intelligence researchers at Chinese cybersecurity company Qianxin, who confirmed impact on more than 700 domains, including university portals, AI/SaaS companies, media outlets, fintech firms, […]