I was reading about the difference between the tiers of architecture (2 and 3). I got to know that the later was safer than the first. The 2 Tier poses security risks, a website said. I am unable to understand what security risks the 2 tier architecture could pose?
I took the example of a ticketing software that used to have a 2 tier system. Now, if multiple clients are sending queries, can one client access information of the other one? can the response to the request get mixed up, sending wrong information to each of the clients?
I am unable to think of security issues which could exist. It would be great if anybody could drop in an answer.