BTW, there could be a motive behind this as well, to let the victim know deliberately who they were and how they were doing it. But this is very rare, and only useful if it is a one-off attack. But the attack that was analysed by Check Point was that from repeat offenders, so to me it looked like someone who had just taken an online cracking 101 lessons and targeted few state institutions of a country :)
Being a football player is also applying comprehensive checklist, question is who does it faster and is able to execute it.
Like I do understand all the exploits but executing them and executing them quickly or iterating over possible solution space is taking me 4 days on HTB easy boxes.
There are people who break really hard boxes in matter of hours or even minutes.
So for me it is comparison like I am playing soccer with my neighborhood friends and playing premier league. Like I do know the moves that should be done but I do not have reflexes built for that and building those reflexes takes years of focusing on playing football. Having reflexes on which exploit to choose or which tool you should pick up to go through with hack is something like that and you need years to build it up.