A cloud secret is sensitive credential material used to authenticate to cloud services, such as a password, API key, access token, service account key, or certificate. These secrets are often stored in applications, configuration files, environment variables, CI/CD pipelines, or secret-management systems.
Cloud secrets matter because they can grant direct access to data, APIs, and infrastructure. If a secret is stolen, copied into logs, or reused too broadly, an attacker may be able to impersonate a trusted user or service without triggering an exploit. In real attacks, stolen secrets are often collected, validated, and then used for valid account abuse, persistence, or lateral movement. Defenders reduce this risk by using secret managers, rotating credentials, issuing short-lived tokens, enforcing least privilege, and scanning code, images, and repositories for exposed secrets.