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A newly discovered attack method could allow hackers to crash public Windows domain controllers (DCs) worldwide and weaponize them for massive distributed denial-of-service (DDoS) attacks. SafeBreach researchers have dubbed this technique the “Win-DoS Epidemic,” and warned that it can be carried out without authentication or planting malicious code. Last week, researchers Yair and Shahak Morag…

Microsoft Vice President of Enterprise and OS Security, David Weston, imagines what Windows might look like in 2030—a year he frames as a convergence point for several transformative technologies: His vision is ambitious, but it’s also a clear signal that Microsoft wants customers to upgrade both their software and hardware more frequently. AI as a…

Cyber adversaries are evolving into enterprising operators, blending stealth, speed, and AI-driven tactics to outpace traditional defenses. The CrowdStrike 2025 Threat Hunting Report exposes how these sophisticated actors exploit cloud environments, identities, and generative AI to launch cross-domain attacks. According to CrowdStrike, cybersecurity experts observed a sharp rise in sophisticated attacks, with interactive intrusions increasing…

In this episode of First Ring Daily, Brad Sams and Paul Thurrott discuss the release of GPT-5 by OpenAI and their early experimentations with the company’s latest flagship AI model.

In this article, I provide a complete overview of the zero trust security model. What is zero trust security? Zero Trust Security is a modern cybersecurity model whose fundamental principle is based on the approach “never trust, always verify.” Unlike the traditional cybersecurity model, which follows the principle of “trust but verify,” Zero Trust Security…

For years, Microsoft has promoted passwordless authentication, urging Windows users to embrace secure options like Windows Hello. But new research suggests that the business version of Windows Hello may have a vulnerability, which leaves it open to sophisticated spoofing attacks. At the Black Hat conference in Las Vegas (via The Register), German researchers Tillmann Osswald…

Microsoft has issued an advisory warning customers of a critical security flaw in Exchange Server hybrid deployments. The vulnerability could allow attackers to escalate privileges within cloud environments, without triggering any alerts or leaving behind detectable traces. An Exchange hybrid configuration is a setup that connects an on-premises Microsoft Exchange Server with Exchange Online in…

Microsoft has launched the Phishing Triage Agent in public preview, seamlessly integrated into Microsoft Defender as part of its expansive Security Copilot initiative. Designed to automate and speed up the analysis of user-reported phishing emails, the agent aims to reduce response times and lighten the load on security teams. The launch of Microsoft’s new Phishing…

Microsoft Exchange Online is a cloud-based messaging platform that provides enterprise-grade email, calendaring, and collaboration tools as part of the Microsoft 365 suite. This article explores its key features, service limits, differences from on-premises Exchange (2016/2019), and an overview of what’s involved in migrating from an on-premises environment. What is Microsoft Exchange Online? Microsoft Exchange…

Cybersecurity experts have disclosed a critical vulnerability in Broadcom chips found in over 100 Dell computer models, putting millions of users at risk. These flaws could enable hackers to hijack devices, steal passwords, and access sensitive data. According to Cisco Talos researchers, the five security vulnerabilities (tracked as CVE-2025-24311, CVE-2025-25215, CVE-2025-24922, CVE-2025-25050, CVE-2025-24919) affect more…

Overburdened cybersecurity experts are struggling to manage a variety of tools from multiple vendors, sacrificing efficiency, visibility, and budget in the process. New research from Kaspersky shows a growing shift, as more organizations turn to consolidation and automation to simplify operations and regain control. Kaspersky’s research found that around 72 percent of organizations use multi-vendor…

Microsoft has rolled out cross-cloud synchronization in public preview for Entra customers. This new feature simplifies user lifecycle operations across multiple Microsoft cloud environments, enhancing consistency, security, and administrative efficiency. This cross-cloud synchronization feature allows administrators to automatically manage user identities (such as creating, updating, or deleting accounts) across different Microsoft cloud environments. It helps…