 It was also applied to several web frameworks, including JavaServer Faces, Ruby on Rails and ASP.NET as well as other software, such as the Steam gaming client.In 2012 it was shown to be effective against some hardened security devices.While these earlier attacks were fixed by most TLS implementors following its public announcement, a new variant, the Lucky Thirteen attack, published in 2013, used a timing side-channel to re-open the vulnerability even in implementations that had previously been fixed.