P2PInfect is a botnet and worm family associated with abusing exposed Redis instances. It matters because Redis is commonly deployed as an internal service, but when it is reachable from the internet it can become an easy foothold for automated compromise. Attackers can scan for open Redis services, interact with them, and use the access to drop malware, expand control, or recruit the host into a botnet.
In defense, the key control is exposure management: restrict Redis to trusted networks, require authentication, and monitor for unusual Redis commands, scanning behavior, and unexpected outbound connections. Its peer-to-peer design can also make infected systems harder to isolate because there is no single command server to block. P2PInfect is a reminder that a simple configuration mistake can create a durable intrusion path.