issue 1 publication date 2021-04

• A Review of Intrusion Detection Defense Solutions Based on Software Defined Network
• A survey on RPL attacks and their countermeasures
• A survey on the wi-fi wireless network systems penetration approaches
• A New Model for Email Spam Detection using Hybrid of Magnetic Optimization Algorithm with Harmony Search Algorithm
• Security of Sponge structures
• Evaluating Challenges of the National Cryptocurrency