Along the same lines, I came across this tool which checks your server for the Heartbleed vulnerability:https://www.ssllabs.com/ssltest/index.html
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Go ahead and enter your WingFTP server name and run the analysis!
While the server is not susceptible to the Heartbleed vulnerability, it did identify:"The server supports only older protocols, but not the current best TLS 1.2. Grade capped to B."
So, will WingFTP look to implement TLS 1.2?