Leaky Server Exposes 12 Million Healthcare Records to Meow Attacker. Extortion and fraud risks persist for tens of thousands of patients. A healthcare technology company leaked 12 million records on patients including highly sensitive diagnoses, before the exposed cloud server was struck by the infamous “meow” attacker, researchers have revealed. A team at SafetyDetectives led by Anurag Sen discovered the leaky Elasticsearch server in late October after a routine IP address scan, although it’s unknown how long the data was exposed for before that. Third-party company: iSofH.