Programs like this had existed for decades, but MonsterMind software would add a unique new capability: Instead of simply detecting and killing the malware at the point of entry, MonsterMind would automatically fire back, with no human involvement. That's a problem, Snowden says, because the initial attacks are often routed through computers in innocent third countries. “These attacks can be spoofed,” he says. “You could have someone sitting in China, for example, making it appear that one of these attacks is originating in Russia. And then we end up shooting back at a Russian hospital. What happens next?”