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Today, we focus on a critical and rapidly evolving Microsoft SharePoint vulnerability that’s rocked the security world in July 2025. We’ll walk you through what it is, why it matters, how attackers exploit it, and most importantly, what you and your organization can do to defend against it.

For those new to cybersecurity, we’ll also explain the tricky technical jargon around this vulnerability, so you can follow along confidently, whether you’re an entry-level analyst or someone keen to learn more.

- https://www.sans.org: Critical SharePoint Zero-Day Exploited: What You Need to Know About CVE-2025-53770

- https://msrc.microsoft.com: Update Guide Vulnerability CVE-2025-53770

- https://msrc.microsoft.com: Guidance For Sharepoint Vulnerability CVE 2025-53770/

- https://www.bleepingcomputer.com: US nuclear weapons agency hacked in Microsoft SharePoint attacks

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