A method for providing assistance to each of a plurality of users, each having been enrolled as a member of a community includes receiving, at a server, communications from corresponding mobile devices, each of which is associated with a user who has enrolled as a member in a first community. These emergency communications were initiated by activation of respective personal security buttons on the mobile devices, and provide information about respective security conditions. In response to the communications, the server alerts corresponding first and second security services that are appropriate responding to the respective security conditions.