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When a single login can unlock an entire digital workplace — email, calendars, documents, chats, and cloud drives — protecting that entry point becomes a matter of survival. That’s exactly the setup with Microsoft 365, which has become the nerve center of business communication. And unfortunately, cybercriminals know how much sensitive data flows through it daily. In February 2025, a massive botnet campaign swept through thousands of Microsoft 365 accounts using a technique called password spraying, in which an attacker attempts common passwords across many accounts until one gives way. Even organizations with multi-factor authentication (MFA) weren’t immune. The attackers exploited a loophole in non-interactive sign-ins, or background logins that don’t require user input, allowing them to bypass MFA protections and operate under the radar.
Cybersecurity today is a moving target: fast, sophisticated, and constantly evolving. Managed Detection and Response (MDR) — a service that monitors your systems around the clock and responds to threats in real time — has become essential in this environment. By combining smart detection tools with a team of security analysts, MDR provides continuous protection that goes beyond traditional defenses. It’s proactive, it’s fast, and in today’s cloud-first world, it’s foundational.
“You can’t expect a business owner — or even an internal IT manager — to stay awake and review logs in the middle of the night,” Adam Preusler, IT Manager at Kustura Technologies, said. “That’s where MDR comes in. It ensures there are always eyes on your environment, with experts ready to act.”
One area under increasing threat is Microsoft 365. As more companies migrate to the cloud and consolidate operations under Microsoft’s umbrella, including Outlook, Teams, OneDrive, and SharePoint, the attack surface expands.
“It’s not just about email anymore,” Preusler said. “A compromised 365 account could mean access to sensitive files, conversations, contracts, and even your company’s internal infrastructure.”
Recognizing this, Kustura Technologies is rolling out a new layer of protection for clients who use Microsoft 365: RocketCyber’s MDR platform, a 24/7 security operations center-as-a-service built specifically to monitor Microsoft 365 environments.
RocketCyber, a Kaseya company based in Dallas, specializes in MDR for small to midsize businesses. The platform combines machine learning with human expertise to detect suspicious logins, account takeovers, credential stuffing attempts, and other threats that slip past conventional defenses. If an anomaly is detected — say, a login from Singapore at 2:13 a.m. — a human analyst investigates and can lock the account in real time.
Kustura is integrating RocketCyber into its Microsoft 365 management services, part of its broader approach to delivering cybersecurity solutions for businesses in Jacksonville FL and Gainesville FL. This model reflects how modern IT service companies are adapting to cloud-based risk — focusing not just on uptime, but on real-time defense.
“We’ve been managing Microsoft 365 as part of our Peace of Mind Plan for years,” Preusler said. “But now it’s become clear: securing that environment is as important — and as resource-intensive — as managing a physical server.” The need for this level of protection is only growing. Microsoft plans to retire basic authentication by September 2025 — a move that will close off one of the most exploited doors in the cybersecurity world. However, for organizations still relying on outdated configurations or lacking proper monitoring, the transition can create new blind spots. Without visibility into suspicious activity, even the most secure environments can be compromised.
The bottom line? If your organization uses Microsoft 365, it’s time to think beyond passwords and firewalls. Threats are evolving. Security needs to evolve with them.
And with MDR in place, someone’s always watching. Kustura Technologies is a leading Cyber Security Company in Jacksonville FL and Cyber Security Company in Gainesville FL offering IT Support Services, Managed IT Services, and Microsoft 365 security solutions for small to midsize businesses. To learn more about how Kustura is protecting Microsoft 365 environments with RocketCyber, contact info@kustura.com. We’re here to help you stay secure, informed, and ahead of today’s threats.