Over 39,000 Unauthenticated Redis Instances Found Exposed on the Internet

An unknown attacker targeted tens of thousands of unauthenticated Redis servers exposed on the internet in an attempt to install a cryptocurrency miner.
It's not immediately known if all of these hosts were successfully compromised. Nonetheless, it was made possible by means of a "lesser-known technique" designed to trick the servers into writing data to arbitrary files – a case of unauthorized

exposed internet redis