Alphabet launches Chronicle, a business unit looking to create a digital ‘immune system’ against threats. Chronicle wants to build a system that will guard against Internet threats by looking for digital anomalies. It’s an approach also being tried by other companies, ranging from Cisco to at least one startup. Chronicle is the latest business unit launched independently from Alphabet’s X business unit, which is all about “moonshots” The goal is more modest: Building a digital “immune system” against enterprise security threats.”]