It's important to note that if you have a Shield active and choose to Attack another player, your Shield will be deactivated, regardless of the remaining Shield time. 

NOTE:  Activating a Shield after raiding other Hives will not protect you from revenge attacks initiated by the players you have raided.

You can acquire a Shield item by redeeming Shield shards that you have collected. These shards can be earned through various activities within the game including Hunting, spinning the Lucky Wheel, and Quests.

REMINDER: If you log in for 6 consecutive days, you will automatically be given a Shield on the 7th day. If you do not attack other players PvP), you will receive a free Shield each consecutive day you log in thereafter. If you attack (PvP) other players, the Shield will be removed and your consecutive day count will be reset. 

NOTE: All players are provided with a 24 hour Shield each time the game returns from a maintenance downtime. This is to allow players time to get their PvP teams in place before PvP resumes.

You can often find Shield shards in the game shop.

Alternatively, you have the option to purchase a Shield item from the Item Marketplace, providing you with immediate protection for your Hive.