Progress Told ShareFile Customers to Pull the Plug on Their Servers. Here’s What We Know.

Pierluigi Paganini
July 12, 2026

Progress urged ShareFile Storage Zone customers to shut down internet-facing servers immediately over a credible security threat under investigation.

Progress Software sent an urgent email to ShareFile customers the evening of July 10 with a subject line that left no room for ambiguity: “Service Disruption. Immediate Action Required.” The company told customers running Storage Zone Controllers to shut down their Windows servers immediately, citing what it called a “credible external security threat.”

The email became public when a system administrator posted it to Reddit’s r/sysadmin a few hours later.

Storage Zone Controllers are the on-premises component of ShareFile’s hybrid deployment model. Organizations that use them keep their files on their own infrastructure while ShareFile’s cloud handles authentication, user management, and collaboration. Because the controller sits between the cloud platform and company-managed storage, handling every file upload and download, it typically lives at the network’s edge with internet exposure. That’s what makes it useful, and that’s what makes it a target.

Progress confirmed it’s responding to a credible external security threat and said it took the access-disabling step out of an “abundance of caution” while working with internal and external security experts.

“We have reason to believe there is a credible external security threat targeting Progress Software’s ShareFile Storage Zone Controllers. Currently, we have no indication of unauthorized access to any Progress ShareFile accounts or data. As a precaution, we have temporarily disabled access to ShareFile accounts using the Storage Zone Controllers, including yours.” reads the letter. “IMMEDIATE ACTION REQUIRED: You must…

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Progress Told ShareFile Customers to Pull the Plug on Their Servers. Here’s What We Know.