If you’re a CTO or a network admin, you’ve probably memorized some of the basics of network security. Have lots of well-configured firewalls and IDS/IPS devices. Use switches instead of hubs. Make sure everyone uses complex passwords and make sure they don’t write them down anywhere. Have lots of eyes and cameras around the building for the sake of physical security. But in designing a secure network and workplace, your system is only as secure as your weakest link.