he still sees nothing wrong with selling zero days to the government and gets annoyed when people talk about the ethics of it. “No one gets mad that, you know, companies sell the government guns and tanks,” he says, noting that while US researchers are selling zero days to their government, Chinese and Russian hackers are doing the same for their governments. It’s better for the United States to pay top dollar for exploits, he says, than allow them to get into the hands of enemies.

