While not specifically related to crytography, this clue spawned my interest.
With the Tracer Tail, you can visit the video and find it yourself. But this clue is more difficult. Below are
two images Blizzard had published on their "Media - Overwatch"
webpage. The "corrupted" image first appeared at
Tue, 09 Aug 2016 01:55:01 GMT
Last-Modified: Wed, 04 May 2016 19:22:06 GMT
Last-Modified: Tue, 09 Aug 2016 01:55:01 GMT
Please note you cannot upload these images to any hosts that do image compression. It will ruin the byte-for-byte comparison we're going to do.
So immediately you'll notice the new image looks strange, the colors are off and there's bars across the image. You'll also note that it doesn't START like that, only around 1/20th of the image does it start to break. This is an artifact of either a corrupt image, or in our case a clear clue from Blizzard :)
So on Linux, there's a command line tool called cmp, which allows you to easily do a byte for byte comparison of files. We're going to use the following command to determine the files differences:
$ cmp -l -b original.jpg new.jpg 32777 41 ! 120 P 32869 41 ! 157 o 33225 41 ! 162 r 33305 41 ! 40 33581 41 ! 161 q 34007 41 ! 165 u 34362 41 ! 145 e 34380 41 ! 40 ... (continued in your terminal)
The far left line is the identifier mark, basically a line number, the next two columns are the octal value and binary string value of the original file, the second two columns a re the octal value and binary string value of the new file.
This information comes from the GameDetectives Discord and specifically this YouTube Video, revisions made with input from reddit users shuopao and BTYM