Assessing the security status of systems using the OAuth 2.0 authorization protocol

<ns3:p>The article presents an analysis of the security of systems using the OAuth 2.0 protocol. It is an authorization protocol widely used in websites, including the largest in the world. It is characterized by high complexity and complicated operation. However, when used correctly, it provides significant convenience for users in sharing data with web applications from other websites. This describes specialized tests that were conducted to identify weaknesses in the basic OAuth 2.0 implementation. Based on these tests, the threats and risks associated with inaccurate implementation were identified, along with a presentation of their potential effects.</ns3:p>