verb (used with object), van·dal·ized, van·dal·iz·ing. to destroy or deface by vandalism: Someone vandalized the museum during the night.

Is there such a word as vandalization?

noun. The act of deliberately destroying or damaging public or private property. 'We have to stop vandalization on farms. '

Is it Vandalising or vandalizing?

As adjectives the difference between vandalized and vandalised. is that vandalized is referring to something that has been struck by vandalism while vandalised is referring to something that has been struck by vandalism.