1. hackproof - Adjective
2. hackproof - Verb
hackproof (comparative more hackproof, superlative most hackproof)
Secure from hackers; impossible to hack into.
hackproof (third-person singular simple present hackproofs, present participle hackproofing, simple past and past participle hackproofed)
(transitive) To make (a computer system) secure from hackers.