William Abel, a mail censor at Iowa's State Prison, Fort Madison, using a hot iron to bring out a secret message written in lemon juice on a letter.Three Lions/Getty Images Humans have had a long ...

The old practice of hiding words or symbols, or engraving letters too small to be read, has come into favor again. By Victoria Gomelsky In 2014, Fie Isolde’s future husband wrote her a 28th birthday ...

A Hillhouse student’s eyes widened as he applied grape juice and heat to what appeared to be a blank piece of paper — but instead held a secret message in invisible ink, written as part of a course ...

PHOENIX — It was more than a month ago that ABC15 exposed outgoing Phoenix Police Chief Jeri Williams and her top brass had used the secret messaging app Signal to discuss sensitive department matters ...

Ask any Taylor Swift fan what the secret to her colossal success is, and you might be surprised by their answer. Her emotionally vulnerable lyrics, epic live shows and 11 chart-topping studio albums ...

Engineering requires deep attention to detail, but sometimes engineers take it a step further by adding secret, playful ...

Do you ever feel like someone is peering over your shoulder while sending private messages to your friends and family? Well, you won't have to worry about those nosy people knowing what you're sending ...

Somali TikToker who said Elon Musk is 'about to die' in viral video speaks out after backlash: 'My message was meant to...' ...

While sending messages via Facebook Messenger may seem like a private way of communicating, it’s not. Facebook does not encrypt your regular messages on Messenger, and they can be handed over as ...

The House committee investigating the Jan. 6, 2021, riot at the Capitol on Thursday publicized freshly obtained communications from the Secret Service showing agents were aware of concerns about ...