For those of you who don't know about the latest update of the viral marketing campaign Warner Bros. has started, the words You, Alone, and Are have been deciphered with people speculating that the four letter message could be "You are not alone" and are also speculating that the Kryptonian villain known as Zod could be sending this message. With new decoding done, the sender of this message could possibly be the Kryptonian known as Faora.
Down below you can see screenshots taken from the website and how it corresponds with Faora's insignia/crest.
Here is the screenshot from the website:
If you look at the left of the insignia/crest, you can see how it corresponds with the screenshot.
UPDATE: Many other users are starting to speculate and stick with the idea of the crest being Zod's. With today's new reveal, it possibly could be Zod's logo.
As you can see, some parts of the two images look different.