Cyber threats pose a significant risk to individuals and organizations alike, making it essential to understand how they occur and take measures to prevent them. The biggest hacks involve exploiting vulnerable assumptions, such as trusting client-side input or storing sensitive credentials in plain sight. These vulnerabilities can be mitigated by separating responsibilities, validating expected input server-side, and controlling sensitive secrets across development teams. By being aware of these risks and taking proactive steps, individuals and organizations can protect themselves from cyber threats and make the internet a safer place.