Four Essential Steps to Take If Your Personal Information Is Leaked

Personal information leaks continue to plague individuals, but experts emphasize that essential security steps can significantly reduce the risk of account takeovers and financial fraud. These measures include changing passwords, enabling multi-factor authentication, and verifying communications through official channels.

One common scenario involves hackers exploiting leaked credentials from one site to access accounts on others through credential stuffing. To combat this, individuals must change passwords not only on the affected site but also on any other platform using the same login information. Adding multi-factor authentication (MFA), such as OTP, and setting up international login or payment blocking services can create additional barriers for cybercriminals.

When faced with suspicious messages, such as unexpected password change notifications or login alerts, it is crucial to verify them through direct contact. For instance, if impersonated as a prosecutor demanding information, one can use the Supreme Prosecutors' Office's 'Jjinsenter' service to confirm the authenticity of documents.

Government services offer further protection. The Korea Internet & Security Agency's 'Recover My Leaked Information' service allows users to check if their accounts are circulating on the dark web. Additionally, the Personal Information Protection Commission's 'Website Membership Withdrawal Service' helps users identify and close inactive accounts, preventing potential misuse. Finally, registering as a 'person with exposed personal information' with financial authorities can block third parties from opening new accounts or applying for loans using stolen identity details.

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