An Information Sharing and Analysis Centre (ISAC) is a collaborative organization where companies and institutions from the same industry voluntarily share cybersecurity information, such as threat intelligence, vulnerabilities, and best practices. By pooling resources and insights, ISAC members can detect, prevent, and respond to cyber threats more effectively. ISACs play a crucial role in strengthening the collective cybersecurity posture of critical sectors like finance, energy, and healthcare by fostering trust, real-time communication, and coordinated responses to emerging risks.