A security breach occurs when unauthorized individuals gain access to sensitive information or systems. This can happen through various methods, such as hacking, phishing, or exploiting software vulnerabilities. The compromised data may include personal information, financial records, or confidential business information, leading to potential harm for individuals and organizations. Organizations often implement security measures to protect against breaches, including firewalls, encryption, and regular software updates. When a breach occurs, it is crucial for the affected parties to respond quickly to mitigate damage, notify those impacted, and strengthen their security protocols to prevent future incidents.