Secure file transfers Summary: John Thielens, vice president of technology at Tumbleweed, talks about the need for managed file transfers that are not only secure, but auditable and easy to use. April 1, 2008 -- 15:51 GMT (08:51 PDT) Loading... Please wait. Topics: Security, Privacy Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.