Security threats targeting widely used business platforms can quickly become high-priority issues for managed service providers. Microsoft’s latest warning about active attacks exploiting on-premises SharePoint servers is another reminder that vulnerabilities don’t stay theoretical for long. While applying security updates remains essential, the incident also underscores the importance of continuous monitoring, proactive communication, and layered security strategies. Here are five takeaways MSPs should consider as they help clients strengthen their security posture and reduce risk.
1. Speed Still Matters When Critical Vulnerabilities Emerge
Threat actors often begin targeting newly disclosed vulnerabilities within hours of public disclosure. Delaying updates can significantly increase an organization’s exposure and create unnecessary business risk. MSPs that quickly identify, prioritize, and deploy critical patches help clients minimize disruption while demonstrating the value of proactive IT management.
MSP Action: Review patch management procedures and verify that all supported SharePoint servers are updated as quickly as possible.
2. Don’t Overlook On-Premises Environments
Although many organizations have shifted workloads to Microsoft 365, countless businesses still rely on on-premises SharePoint servers for critical operations. These environments require the same level of security oversight as cloud services and should be regularly assessed for vulnerabilities, configuration issues, and unsupported systems.
MSP Action: Inventory client SharePoint deployments and identify any on-premises servers that require immediate security reviews.
3. Patching Isn’t Always the End of the Response
Security researchers have warned that attackers may attempt to steal SharePoint machine keys, potentially allowing them to maintain access even after patches are installed. That’s why remediation should include reviewing logs, monitoring for suspicious activity, and determining whether systems were compromised before updates were applied.
MSP Action: Perform log reviews and consider additional threat-hunting activities for clients operating affected SharePoint servers.
4. Turn Security Events into Client Conversations
Every major cybersecurity event creates an opportunity to strengthen client relationships. Rather than simply notifying customers about a new patch, explain the business impact of the vulnerability, outline the remediation process, and recommend additional security measures that reduce future risk.
MSP Action: Proactively communicate with affected clients about the vulnerability, the steps you’ve taken, and any additional recommendations to strengthen their security posture.
5. Proactive Security Services Continue to Differentiate MSPs
The latest SharePoint exploit demonstrates why organizations increasingly rely on MSPs for more than traditional IT support. Services such as vulnerability management, continuous monitoring, security assessments, and strategic cybersecurity planning help clients stay ahead of evolving threats while reinforcing the MSP’s role as a trusted advisor.
MSP Action: Review each client’s cybersecurity roadmap and identify opportunities to expand proactive security services that improve long-term resilience.
Why This Matters for MSPs
The latest SharePoint exploit is another reminder that today’s cyber threats require more than a reactive approach. Clients increasingly depend on MSPs to identify emerging risks, respond quickly, and implement security strategies that reduce future exposure. By combining rapid patch management with continuous monitoring, clear client communication, and ongoing security guidance, MSPs can strengthen client trust while reinforcing their value as strategic cybersecurity partners.