Email spoofing remains one of the most common techniques used in phishing and business email compromise attacks. Attackers forge the sender’s address to make messages appear as if they came from a trusted internal user or a well‑known external partner. Microsoft 365 includes built‑in anti‑spoofing protection, and Spoof Intelligence adds visibility and control so administrators can safely block malicious senders while allowing legitimate ones. What Microsoft 365 Considers “Spo

Invoice fraud is one of the most common email threats targeting Microsoft 365 tenants. These messages usually impersonate executives, finance staff, or vendors and request urgent payment changes. Because they often contain no malware or malicious attachments, they can bypass basic email security unless specific Defender for Office 365 policies are configured. The steps below explain how to stop invoice fraud with Microsoft Defender for Office 365 by applying Microsoft‑recomme

Employee offboarding is one of the most common — and most underestimated — security gaps in small and medium‑sized businesses. In Microsoft 365, simply disabling a user account does not automatically remove access to company data. Active sessions, shared files, synced devices, and delegated permissions can all persist longer than most organizations expect. This guide explains how to fully remove access to company data when an employee leaves, based on how Microsoft 365 actual

Password spray attacks have quietly become one of the most common ways cybercriminals break into Microsoft 365 environments. Unlike brute-force attacks that hammer a single account repeatedly, a password spray attack tests a small number of weak passwords across many  accounts — avoiding lockouts and blending in with normal traffic. For SMBs, this threat is especially dangerous because: Users often share similar password patterns Passwords are reused across multiple systems L

Ransomware continues to be the top threat affecting small and midsize businesses. Attackers increasingly rely on legitimate tools—Office macros, scripts, email attachments, and remote execution—to slip past traditional antivirus. Microsoft’s Attack Surface Reduction (ASR) Rules offer a powerful, proactive layer of defense by blocking these behaviors before they execute. Microsoft confirms that ASR rules target behaviors used in malware, ransomware, and advanced attacks, helpi

Many organizations today rely on contractors, temporary staff, and frontline workers to support operations. While this flexibility is essential, it often introduces a common security problem: how to provide these users with access to corporate systems without exposing sensitive data or over-licensing expensive enterprise tools. In many environments, contractors are given shared accounts, unmanaged devices, or personal email access to company resources. These approaches may ap