Well they have a news letter mentioning the recent cases of
assualt against bus drivers and their " big boss " highlighted in
it that in any case of being assaulted , just block and do not hit
back so that they can report to police and sue them back for
assaulting . 
. But frankly speaking not
everyone will have such good patience . So if you want to try your
luck , good luck to you . SBS have the police and LTA on their side
. Those so called concession cards and etc are actually property of
SBS transit not yours .
