With a population density of over 7900/sqkm, any attack will yield high casualties.
Think about it. If you are a terrorist where would you attack
I doubt that they will interested in the places I frequent e.g. NTUC supermarket, HDB heartlands, Mustaffa, my neighbourhood,...
If there is a terrorist attack, they will most likely go after high profile places like Pulau Bukom, Sentosa, Orchard Road, airport, ..... The people that will be hurt will be the tourists & foreign workers since they will be in the targetted areas.