In Battlestar Galactica (2004) robots called Cylons attack the humans by hacking their computer network. They are able to destroy most of humanity and all but a handful of human ships. One of the ships that survives is the Battlestar Galactica, an old ship that was about to become a museum, and is too old to be connected to the network. The man in the picture is Admiral William Adama, captain of the Galactica. He orders that computers are not to be networked together, so they can't be hacked by the Cylons.
In real life cyber security provider CrowdStrike had a bug in one of its update files. The file went out as part of an automated update to computers at many businesses around the world, including banks and airlines. The bug made the computers crash, grounding flights, making payment systems inoperable, etc.
Just to clarify a point of the show, it isn't too old to be networked. They had that ability then. They had just previously fought a war with the Cylons, in which the Galactica was built for and fought in, so not networking was standard protocall then. The military decided, after a long peace, they should have networked ships, assuming the Cylon threat was gone. This cause nearly all modern military vessels to be open to exploit, except the Galactica and few remaining older vessels.
I forget, did Pegasus end up disabling their networking after they made their initial escape? I don't remember it being mentioned, but it makes for quite a plot hole if they continued on as normal.
Thanks for this article describing the actual computer system update crisis ... but still, i do not know what this photograph of some guy means in your post ... Edit : never mind someone else explained it to me here