The previous challenge had been quite hard and Santa spent several days before he figured everything out, but he was finally back at the North Pole after successfully placing a cache at the right place. Being quite exhausted Santa was now sitting behind his desk sleeping when the elf came through the door. "I have been going through your email." the elf said. Santa had woken up from the door being opened and was just about to say something when the elf continued: "And there is one I think you would be quite interested in seeing yourself." "Oh..." Santa started as he turned to his computer. He rarely opened his email himself as the elves took care of all the wishlists. "So which email is it?" he asked. "It should be the last one. The subject is 'Challenge for you'. Let me show you." the elf answered as he walked around the desk. But Santa had already found the right one and opened it before the elf got there.
The elf suddenly stopped when he saw Santa's computer. "As i recall you were surprised that we still have something as oldfashioned as a faxmachine, and this is how you read your email?" Santa looked at the elf and grumbled. "I like to keep things easy, so why change it if it isn't broken?" "But..." the elf was not sure how to continue, but asked: "Well, how are you going to open that attached image?" Santa didn't sound to happy as he replied: "That is really easy. As you can see I just press V and then S to save it to a file share, and then I can open it from there." The elf was almost speechless, but mumbled: "Yeah, that sounds really easy" as Santa was punching away on the computer. "There you see!" he almost shouted as he hit the enter key.
"Uhm. It seems like I have some problems opening it after all" Santa said. "But I will look into it. I think you should leave me alone to look at the challenge from this Samuel guy." "OK" the elf said and started to walk out of the office. But when he reached the door he turned around and said: "Maybe you shouldn't trust the sender address too much. I have heard that it is really easy to hide the real sender of an email." Then he left the office to let Santa do his thinking. After all it was just a few days before he had to be ready to deliver all the gifts.