A security analyst discovers that a large number of employee credentials had been stolen and were being sold on the dark web. The analyst investigates and discovers that some hourly employee credentials were compromised, but salaried employee credentials were not affected.
Most employees clocked in and out while they were inside the building using one of the kiosks connected to the network. However, some clocked out and recorded their time after leaving to go home. Only those who clocked in and out while inside the building had credentials stolen. Each of the kiosks are on different floors, and there are multiple routers, since the business segments environments for certain business functions.
Hourly employees are required to use a website called acmetimekeeping.com to clock in and out. This website is accessible from the internet. Which of the following is the most likely reason for this compromise?