blacklist->blocklist
blacklists->blocklists
man-in-the-middle->on-path attacker
master->primary, leader, active, writer, coordinator, parent,
masters->primaries, leaders, actives, writers, coordinators, parents,
slave->secondary, follower, standby, replica, reader, worker, helper,
slaves->secondaries, followers, standbys, replicas, readers, workers, helpers,
whitelist->allowlist, permitlist,
whitelists->allowlists, permitlists,