【図表】
Web shell encounters
出典: https://www.microsoft.com/security/blog/2020/02/04/ghost-in-the-shell-investigating-web-shell-attacks/
【ブログ】
◆Ghost in the shell: Investigating web shell attacks (Microsoft, 2020/02/04)
https://www.microsoft.com/security/blog/2020/02/04/ghost-in-the-shell-investigating-web-shell-attacks/