Brain-Computer Interfaces (BCIs) are poised to revolutionize cybersecurity by enabling authentication and security measures based directly on neural activity rather than traditional credentials. The chapter examines various BCI types such as invasive, semi-invasive, and non-invasive with particular emphasis on practical non-invasive systems like EEG that can detect unique brain patterns (brain-prints) for authentication, monitor cognitive states to prevent human error in Security Operations Centers, and enable intent-based access control through mental commands. The chapter argues that while BCIs represent a paradigm shift from reactive to proactive, cognition-aware cybersecurity, their successful implementation depends critically on developing robust technical safeguards, establishing comprehensive neuro-rights frameworks, ensuring transparent governance, and balancing innovation with stringent ethical protections to prevent these powerful tools from becoming instruments of control rather than security enhancement.