Progress Software emails ShareFile customers who run on-premises Storage Zone Controllers instructing them to shut down the Windows servers hosting those controllers. The company says it has identified what it describes as a “credible external security threat” targeting its ShareFile Storage Zone Controller component. In response, Progress also temporarily disables access to the affected ShareFile accounts “out of an abundance of caution” while it investigates and works on remediation.

According to multiple reports, Progress confirms the warning as an active security response and directs customers to take the shutdown step immediately to reduce exposure. Both outlets describe the alert as focused specifically on environments that use Storage Zone Controllers, rather than on the main ShareFile cloud service. Progress states it is coordinating internally and with external security partners, but it does not provide public technical details in the reports summarized here. The guidance is presented as a time-sensitive action by customers until Progress completes its assessment and provides further instructions.