Yersinia is a network security/hacking tool for Unix-like operating systems, designed to take advantage of some weakness in different network protocols. Yersinia is considered a valuable and widely used security tool. As of 2017 Yersinia is still under development with a latest stable version number 0.8.2 available only at GitHub source code repository. Attacks for the following network protocols are implemented: Spanning Tree Protocol (STP) Cisco Discovery Protocol (CDP) Dynamic Trunking Protocol (DTP) Dynamic Host Configuration Protocol (DHCP) Hot Standby Router Protocol (HSRP) IEEE 802.1Q IEEE 802.1X Cisco Inter-Switch Link (ISL) VLAN Trunking Protocol (VTP) Yersinia was rated #59 at SecTools.Org: Top 125 Network Security Tools Similar Tools Mausezahn a traffic generator for OSI layer two and above Scapy an interactive Python based packet crafting tool External links GitHub source code repository Computer security software