This book constitutes the revised selected papers of the 7th International Conference on Networked Systems, NETYS 2019, held in Marrakech, Morocco, in June 2019. The 23 revised full papers and 3 short papers presented were carefully reviewed and selected from 60 submissions.

Dynamic Partial Order Reduction under the Release-Acquire Semantics.- On the Complexity of Fault-Tolerant Consensus.- Formal Verification.- Checking Causal Consistency of Distributed Databases.- Liveness in Broadcast Networks.- Formal Verification of UML State Machine Diagrams using Petri Nets.- Synthesize Models for Quantitative Analysis using Automata Learning.- Continuous vs. Discrete Asynchronous Moves: a Certified Approach for Mobile Robots on Graphs.- Distributed Systems.- Self-Stabilizing Snapshot Objects for Asynchronous Failure-Prone Networked Systems.- Self-stabilization overhead: a case study on coded atomic storage.- StakeCube: Combining Sharding and Proof-of-Stake to build Fork-free Secure Permissionless Distributed Ledgers.- Dissecting Tendermint.- CUDA-DTM: Distributed Transactional Memory for GPU Clusters.- Towards synthesis of distribued algorithms with SMT solvers.- Recoverable Mutual Exclusion with Abortability.- Security.- An Efficient network IDS for Cloud Environments Based on a Combination of Deep Learning and an Optimized Self-Adaptive Heuristic Search Algorithm.- Efficient Security Policy Management using Suspicious Rules through Access Log Analysis.- A Vaccination Game for Mitigation Active Worms Propagation in P2P Networks.-  (Short Paper) How to Choose its Parents in the Tangle.- Bitcoin Security With Post Quantum Cryptography.- Concurrency.- Achieving Starvation-Freedom in Multi-Version Transactional Memory Systems.- Mutex-based Desanonymization of an Anonymous Read/Write Memory.- A Pragmatic Non-blocking Concurrent Directed Acyclic Graph.- Networks.- The Fake News Vaccine.- Distributed Online Data Aggregation in Dynamic Graphs.- A Multi-Criteria Group Decision Making Method for Big Data Storage Selection.