Within the premise of security studies, security is discussed from the viewpoint of three important theories in International Relations; realism, liberalism and social constructivism along with regional security complex theory, developed by Barry Buzan and Ole Wæver and theory of securitization, developed by Ole Wæver.
Innan öryggisfræða má helst nefna kenningar raunhyggju, frjálslyndisstefnu og félagslegrar mótunarhyggju, kenningu Barry Buzans og Ole Wævers um svæðisbundnar öryggissamstæður og kenningu Wævers um öryggisvæðingu.