Some of the most effective attacks today use free, publicly available software known as open-source software. Open-source software is software whose underlying code is made publicly available for anyone to view, use, modify, and share. Open-source software is often created and maintained by communities of volunteer developers, companies, and independent contributors working together. Advertisement Advertisement Advertisement Advertisement AdvertisementWhy Attackers Love Open-Source ToolsNone of the software involved in this attack was custom-built malware. Advertisement Advertisement Advertisement Advertisement AdvertisementKaren Clay, Clay Technology and MultimediaCourtesy, Karen Clay