You may have seen reports in the news on 9th April 2014 about the so-called Heartbleed Bug, which exploits companies using OpenSSL.
We take these threats extremely seriously and respond immediately, which is what we've done with the Heartbleed Bug. We released an emergency patch to all of our servers overnight on 9th April 2014 and as a precautionary measure we recommend that you change your FTP password.