What is Availability

Healthcare activities and all that are related with it are conducted by people. This single fact has brought up many precautions about patients and about information related with their health. Using information and communication technologies to support this kind of information requires particular attention about what happens, namely about who can use it and for what it can be used. This chapter intends to identify the vulnerabilities that could be explored, using an international security standard to support a proactive attitude in face of potential threats that explore the identified vulnerabilities, damaging organizational information assets. Another intention is the establishment of a basis of references in information security to define a level of risk classification to build a referential to the potential that a given threat has to exploit the vulnerabilities of an asset, preventing damages to personal and organizational property, including information, and also activity continuity.