1. The MITRE Corporation: Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK), Tactics, initial access. https://attack.mitre.org/tactics/TA0001/
2. FreeBuf: Analysis on the attack samples of vulnerability exploitation of (2017). https://www.freebuf.com/articles/web/155747.html
3. FreeBuf: Attack event report of APT organization SideWinder (2019). https://www.freebuf.com/articles/paper/213799.html
4. Fireye: Best defense against spear-phishing attacks (2018). https://www.fireeye.com/current-threats/best-defense-againstspearphishing-attacks.html
5. Jansson, K., von Solms, R.: Phishing for phishing awareness. Behav. Inf. Technol. 32, 584–593 (2013)