What are some of the scariest 'Scary but True Horror Stories' you've heard?

I once heard about a group of friends who explored an abandoned asylum. As they walked through the dark corridors, they heard the sound of a woman crying. When they followed the sound, they saw a figure in a white dress standing at the end of the hall. They were so scared that they ran out immediately. It was later said that a patient had died in that asylum under mysterious circumstances.

One of the scariest is when a cloud service provider had a major outage. Many businesses relying on their services were left in the lurch. Their websites went down, and they couldn't access important data stored in the cloud. It showed how vulnerable businesses are when they put all their digital eggs in one basket.

A friend of mine told me about an apartment where the doorknob would turn on its own at night. She was so scared that she would barricade the door every night. She thought it might be a ghost or something. Later, she found out that there was a problem with the lock mechanism that made it seem like the doorknob was turning by itself.

A really scary one was about a Sims family whose house was constantly filled with a cold draft. They could never find the source. One day, a Sim saw a pair of icy blue feet walking in the hallway but there was no body attached. It sent chills down their spines.

I heard of an elevator where a person saw a pair of red eyes staring at them from the corner of the elevator when the lights dimmed. It was so terrifying that they froze until the elevator reached the next floor.

I heard about a geocacher who entered an old mine shaft to find a cache. The deeper he went, the colder it got. Then his flashlight started flickering. He heard the sound of something heavy being dragged. He was so scared that he couldn't move for a moment. But then he managed to run out, leaving the cache behind.

The scariest might be the one about the abandoned asylum in Brogess. There were rumors of inhumane experiments that took place there years ago. People who walked by at night claimed to see faces at the windows, and sometimes they heard screams that seemed to come from the building. It was as if the tortured souls were still trapped inside.

I heard a story where a person had a webcam on their computer. One day, they noticed that the webcam light was on even though they hadn't turned it on. They later found out that someone had hacked into their webcam and had been watching them. It's really terrifying to think that someone could be spying on you through your own camera.

The scariest one I heard was when a person's uverse TV started changing channels on its own in the middle of the night. It would stop on channels that were just static and there was a feeling of being watched. It made the person really paranoid and they ended up unplugging the TV for a while.

I heard a story about a pet dog that was snatched by an alligator while playing near a riverbank. The owner could only watch in horror as the alligator disappeared with their beloved pet. It was so sudden and tragic.