Chinese state-backed hackers are targeting U.S. organizations for espionage purposes, with access to computer systems usually gained by exploiting unpatched vulnerabilities. Hackers are scanning for unpatched systems and use publicly released or homegrown exploits to gain a foothold in networks with a view to stealing intellectual property and sensitive data. On Tuesday, the U.S. National Security Agency (NSA) published a list of 25 vulnerabilities in software systems and network devices that are commonly exploited. In all cases, patches have been released to fix the flaws and, in some cases, those...