In legal proceedings, lawyers need to obtain the customer's ID card information, bank cards and other related information in order to legally represent and handle related affairs. As professionals, lawyers have legal responsibility and moral obligation to protect customers' privacy and personal information security. Law firms usually take strict security measures to protect clients' information, including the use of encryption technology, secure storage and access control to prevent unauthorized access and disclosure. Moreover, lawyers are bound by legal professional ethics and have the obligation to protect the interests and privacy of their clients, and may not abuse or disclose their personal information. If a lawyer violates relevant laws and ethics, the client may seek legal relief and investigate the lawyer's responsibility.