Welcome to Source Code: Decipher’s behind the scenes look at the weekly news with input from our sources.  Topping the headlines this week, Microsoft's Patch Tuesday updates  addressed 55 vulnerabilities, including two actively exploited flaws. Siemens also patched a set of 13 vulnerabilities in the TCP/IP network communication stack, which impacts safety-critical devices, such as anesthesia machines and patient monitors used in hospitals. Finally, a newly uncovered hacker-for-hire group for years offered a slew of services, from hacking into corporate email inboxes or social media accounts, to selling victims' sensitive data.