Redis Streams is a Redis data structure for event and message processing. It lets applications append ordered records to a stream and lets consumer groups read those records cooperatively. Redis also tracks pending work, meaning messages that have been delivered to a consumer but not yet acknowledged. That makes Streams useful for queues, pipelines, and background jobs where reliability matters.
In cybersecurity, Redis Streams matters because it expands the server’s trusted command surface. Attackers may try to abuse stream and consumer-group state, especially in environments where Redis is reachable with valid credentials but weak segmentation or overly broad ACLs. Defenders should treat stream commands as sensitive, limit who can read or modify them, and monitor pending-entry and consumer-group activity for unexpected changes. When Streams are used for coordination, a bug in this area can affect both availability and, in some cases, memory safety or code execution paths.