In response to the evolving landscape of corporate cybersecurity threats, the U.S. Securities and Exchange Commission (SEC) has introduced new regulations to enhance the transparency and accountability of publicly traded companies. These rules, which mandate the disclosure of material cybersecurity incidents within four business days, aim to standardize cybersecurity risk management practices and provide investors with timely, relevant information. This document delves into the implications of these new requirements, offering a detailed exploration of their impact on public companies and best practices for compliance.