Terms for letter H

to gain unauthorized entry to a computer system, particularly by exploiting little-known weaknesses  

the small cases or bags that a passenger can carry onto an aircraft or bus  

the most important office of an organization or company, or the people working there  

high technology, advanced technology  

to employ someone or pay someone to do a particular job  

the collective skills, knowledge, or other intangible assets of individuals that can be used to create economic value for the individuals, their employers, or their community