Preparing for CISSP, CISM, CRISC, CISA, CompTIA, CCSP, CCSK, here is what you need to know. — If you are preparing for CISSP, CISM, CRISC, CISA, CompTIA, CCSP, CCSK, or any other cybersecurity certification, understanding the basics and knowing about identification, authentication, authorization, auditing, accountability, and non-repudiation, will go long way. Trying to explain these terms in easy-to-understand language and with simple examples from the notes.