This book constitutes the refereed proceedings of the 7th International Conference on Mathematical Methods, Models, and Architectures for Computer Network Security, MMM-ACNS 2017, held in Warsaw, Poland, in August 2017. The 12 revised full papers, 13 revised short presentations, and 3 invited papers were carefully reviewed and selected from a total of 40 submissions. The papers are organized in topical sections on Critical Infrastructure Protection and Visualization; Security and Resilience of Network Systems; Adaptive Security; Anti-malware Techniques: Detection, Analysis, Prevention; Security of Emerging Technologies; Applied Cryptography; New Ideas and Paradigms for Security.

A Danish couple with two children face harsh conditions on their 19th Century Nebraska prairie farm. Will they survive blizzards, tornados, plagues of insects, arduous hauls for water, and long journeys to town for farm and household supplies? Peter is stubborn and contrary. Ellen Marie is sweet, congenial, and patient. Neighbors, craftsmen, and pastor reach out to help the struggling family. But Peter persists in his self-reliance. Will Peter ever bring water indoors to supply their home? Can anyone, anything, alter his course? Will he seize upon an opportunity provided by the challenges he faces? This short, allegorical novel is amply illustrated with color photos of prairie wildflowers, prairie restoration efforts in Missouri, the author, the original 1953 Danish edition, and the author's handwritten manuscript. Sales proceeds will help support prairie preservation and restoration efforts of the Missouri Prairie Foundation.