Today, with the rapid development of the Internet, people pay more attention to privacy and information protection. According to a survey conducted by an American research agency, about 90% of adults have taken steps to protect their personal information, such as changing passwords or using privacy settings on social media. In order to better protect the personal information of the public, the United States has issued a series of laws to protect personal information. The "Privacy Act" prohibits the federal government from releasing personal information without a person's permission. The Federal Trade Commission also implements the "Children's Online Privacy Protection Act", which requires parental permission for any website collecting information from children under 13 years of age. The explosion of the Internet economy has made the safety of personal information even more important. Recently, the California Consumer Privacy Act has become the toughest privacy law in history, and companies must comply with it or face significant fines. The Act applies to any for-profit company with a gross annual income of more than $25 million, and consumers have the right to know the information being collected and how it is being used. In this dynamic era of rapid technology development, individuals and companies must be vigilant and protect their personal information. In the future, the creation of more laws and regulations will reduce privacy infringements and protect personal information.