Cipher Mining Inc. (NASDAQ:CIFR) is one of the top bitcoin mining stocks to buy amid bitcoin hike. On July 2, Cipher Mining Inc. (NASDAQ:CIFR) announced that Phase I of Black Pearl reached a self ...

Amateur and professional cryptographers, including those at the FBI, had been trying to decode the infamous serial killer's message to the media for decades.

In 1854, Sir Charles Wheatstone invented the cipher known as "Playfair," named for his friend Lyon Playfair, first Baron Playfair of St. Andrews, who popularized and promoted the cipher. Its ...