How this security start-up joined the unicorn club By: CNBC.com News March 31, 2015 at 09:00 AM EDT Security software is problematic because it fails to keep out the bad guys. Tanium changes the game by limiting the damage the hackers can inflict. Read More >> Related Stocks: Box Inc Facebook Fireeye Inc Google, Inc. Home Depot International Business Machines JPMorgan Chase & Co Microsoft Palo Alto Networks Inc Sony Corp Target Corp eBay