On a regular basis security checks are performed using standard web tools such as Qualys SSL Labs. In addition the yearly OS upgrade of all Desktops initiates a similar audit on the local machine base and ensures clean secure installes of all such devices.
Upon response to a worldwide security incident, whenever that has an impact on the IT Department managed systems, will sprout a security audit of those devices vulnerable to the incident.
This is not done on a regular or controlled manner, however, each year students find it interesting to perform such attempts at will.