Security+ validates the core skills required for a career in IT security and cybersecurity. Learn about the certification, available training and the exam.
Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, or any other entity or phenomenon vulnerable to unwanted change.
The following is the White House’s 2025 National Security Strategy, published Dec. 4, 2025. From the Report Introduction – What Is American Strategy? To ensure that America remains the world ...
Security in IT is the method of preventing, defending and mitigating cyberattacks. Learn the different types of security and the best security principles.
Definition of security noun from the Oxford Advanced Learner's Dictionary. [uncountable] the activities involved in protecting a country, building or person against attack, danger, etc. They carried out security checks at the airport. Passwords are a very important security measure.