The A858 subreddit — they deleted everything and that's the most telling data point

A858DE45F56D9BC9 was a subreddit that ran from around 2011 to 2015. Every post was a massive wall of hexadecimal code, posted on a schedule, never responding to comments. Thousands of posts. People cracked a few — one decoded to a JPEG of a world map. One decoded to a birthday greeting for someone n……