You could create a plugin with a web-filter module. In this filter you would catch all requests to the "you can't view this issue" page and redirected to your own page.
You can find more info about the web-filter module here:
@Alexey Matveev _Appfire_ I am having a hard time, i followed a few tutorials and the servlet filter tutorial as well, but it does not seem to do anything at all. when i go to the hello world page it just gives a 404. I've been searching around but cannot find any resources to expand on the tutorial.
Hello friends! From the community that brought you Welcome Wednesday, Throwback Thursday and Friday Fun, welcome to Taco Tuesday, a weekly discussion about all things Trello. The best part? One Tac...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events