A security researcher who last week canceled a talk on critical vulnerabilities in Siemens’ industrial control systems took the German giant to task Monday for downplaying the problem. NSS Labs will discuss the flaws with SCADA operators that it’s confirmed are legitimate. The company will not publicly release technical details about the PLC vulnerabilities, nor proof-of-concept exploit code, CEO Rick Moy said. Moy: “It’s not as simple as that Siemens is not the best that you can do from a fix””]