Sometimes, what’s good for one application just isn’t good for another. Websites, for instance, often attackers are coming from addresses where many other people are also originating from. If software running on your desktop detects that someone is attempting to do something malicious, it may be OK to block the request completely. Setting up a denial-of-service situation on the desktop affects one user temporarily, whereas on the network, tens of thousands of users are affected. One security professional’s advice on blocking exploits does not fit all circumstances, especially if they aren’t working in the same industry.”]
Source: https://www.darkreading.com/attacks-breaches/not-one-size-fits-all