The Microsoft 365 Security Mistakes That Leave Organizations Exposed
Microsoft 365 powers email, file storage, and team collaboration for millions of businesses across the country. Yet many of those same businesses unknowingly leave the door wide open for attackers. Microsoft 365 security mistakes happen quietly, often buried inside default settings that nobody bothered to review. A single misconfigured permission or a skipped security feature can turn a trusted productivity suite into an attacker’s easiest way inside your network. IT teams juggling dozens of priorities rarely have time to audit every setting, which is exactly why these gaps tend to linger for months without anyone noticing. This article breaks down the most common mistakes, explains why they matter, and shows you exactly how to fix them before they cost your organization data, money, or customer trust.