The biggest security threat? Publishing your entire IT department's names, faces, and roles on a bright yellow poster for the world to see!
Nothing says "please target me for social engineering" like a comprehensive directory of exactly who manages your systems. That "Network Administator" typo is just the cherry on top of this security nightmare sundae.
Somewhere, a pen tester is printing this out and planning their next "phishing expedition" while IT security professionals everywhere are experiencing physical pain looking at this image.