1. A data-holding subsystem holding instructions executable by a logic subsystem to: selectively activate either an unrestricted public browsing session or a private browsing session on a network computing device communicatively coupled via a network to other network computing devices, the private browsing session restrictedly saving, under protection of a private credential, one or more network browsing memories corresponding to activity between the network computing device and other network computing devices; after the private browsing session is ended, block access to the private browsing session unless a received credential submission matches the private credential; and if the received credential submission matches the private credential, resume the private browsing session with access to the one or more network browsing memories.