Outspark has updated their IGN Blog with new information detailing the "Decipher the Cipher" event running all this week in Fiesta. They write:

Are riddles and puzzles your idea of a good time? Are your masterful code-breaking skills the envy of all your friends? If so, get ready to to test your talents and prove your mental prowess in the mind-meltingly fun Decipher the Cipher event running all this week in Fiesta.

Fiesta’s GMs will be running the event three times per day on a different server each day this week. Check the Fiesta Event Calendar to see when the ciphers will need deciphering on your favorite server, and log in for any (or all) of the three rounds.

During each round, the GMs will provide players with a different challenging code and a hint on how to solve it. The code will translate into a set of instructions. The first ten players to decode and follow the instructions properly will receive a prize and a secret word. Finally, players who were in the top ten in any of the rounds will have a chance for the grand prize if they can figure out the secret phrase.

If you think you’re up to the task, hop on your favorite Fiesta server at the the date and time listed below:

Servers: Bijou (Tuesday), Teva (Wednesday), Epith (Thursday), Apoline (Friday)
Times: 12:00 PM, 4:00 PM, 8:00 PM (Note: All time are in PDT or -8GMT)