tokens: In 2016 , these services protected over 1.4 billion devices , making Google one of the largest providers of on-device security services in the world : Identify PHAs using people , systems in the cloud , and data sent to us from devices Warn users about or blocking users from installing PHAs Continually scan devices for PHAs and other harmful threats Additionally , we are providing detailed technical information to help the security industry in our collective work against PHAs .