Many small businesses use Microsoft 365 in the cloud today, but some still have older on-premises systems running in the background. One example is Microsoft SharePoint Server, which some companies use for internal documents, workflows, client files, or department portals.
In July 2026, CISA warned that attackers were actively exploiting multiple Microsoft SharePoint Server vulnerabilities. Security reporting also noted that these issues affect supported on-premises SharePoint Server versions, including Subscription Edition, 2019, and 2016.
For a small business owner, the technical names are less important than the business lesson: older server-based systems need active care. If they are left unpatched, exposed to the internet, or forgotten after years of normal use, they can become a direct path into business data.
SharePoint often holds sensitive information. That may include contracts, HR documents, project files, invoices, vendor records, or internal notes. If attackers get into a SharePoint server, the risk is not just “an IT problem.” It can affect daily operations, customer trust, compliance obligations, and recovery costs.
This warning is especially important because many small businesses do not always know which older systems are still running. A server may have been installed years ago for a specific purpose, then quietly kept online because “it still works.”
That can create risk if nobody is regularly checking:
One point is worth clarifying. SharePoint Online, which is part of Microsoft 365, is different from self-hosted SharePoint Server.
If your business uses SharePoint through Microsoft 365 in the browser, Microsoft handles much of the platform maintenance. But if your business runs SharePoint Server on your own server or in your own hosted environment, your business or IT provider is responsible for patching, monitoring, and securing it.
Many business owners do not know which version they have. That is exactly why an IT review is helpful.
If your company has used SharePoint at any point, ask your IT provider these questions:
You do not need to understand every security bulletin yourself. What matters is having a reliable process so important systems are not missed.
One of the most valuable cybersecurity habits is keeping an accurate technology inventory. That means knowing which computers, servers, cloud services, websites, user accounts, and business applications are active.
Without an inventory, patching becomes guesswork. Backups become incomplete. Old accounts linger. And when a new security warning appears, nobody is sure whether the business is affected.
For Orlando-area small businesses, this is especially important during busy seasons, storm season, staffing changes, and growth periods. Technology often expands quickly, but documentation does not always keep up.
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