Illuminae by Amie Kaufman & Jay Kristoff

• When the planet of Kerenza is attacked, Kady Grant manages to escape in one of three spaceships while her mom and ex-boyfriend Ezra are each on different ones.
• Even though she made it safely off Kerenza, Kady's problems are just beginning:  the attackers are in pursuit and plan to finish off the escapees; a plague is infecting the survivors and turning them into deadly zombies; and the artificial intelligence system, AIDEN, that runs the spaceship has gone rogue.
• With no one left to turn to in space, it's up to Kady's hacking and Ezra's fighting skills to survive and to save each other as well as the rest of the dwindling number of evacuees on the ships.
  

This book was such a fun adventure/survival thrill ride (with a smidgen of romance).  The format comprised of interview transcripts, memos, instant-messaging transcripts, diary entries, and more made for a unique read. (Don't let the size fool you -- it's a quick read with a lot of white space around the pictures, text messages, and such).

Grades 7-12
Book 1 of the Illuminae Files