1. 2018-04-10 [1] [CentOS-announce] CESA-2018:0648 Important CentOS 7 t centos-an Johnny Hughes 2. 2018-04-09 [1] [CentOS-announce] CESA-2018:0649 Important CentOS 6 l centos-an Johnny Hughes 3. 2018-04-09 [1] [CentOS-announce] CESA-2018:0647 Important CentOS 6 t centos-an Johnny Hughes