Once upon a time, Destiny was new, and no one knew what to expect from it. In those halcyon days, the most exciting thing about it was its very first raid, Vault of Glass. It’s still considered one of the best, but there was one problem—a very silly, laughably easy exploit that meant players could make the final boss…
Source: Kotaku – One Well-Placed Grenade Will Bring Down A Boss In Destiny’s Latest Raid