1. Password strength: an empirical analysis;Amico,2010
2. Armasu L, “Backdoors keep appearing in cisco's routers,” Tom's Hardware, 2018 [Online]. Available: https://www.tomshardware.com/news/cisco-backdoor-hardcoded-accounts-software,37480.html. [Accessed July 2018].
3. Arshid, “WP Limit Login Attempts,” 2018 [Online]. Available: https://wordpress.org/plugins/wp-limit-login-attempts/. [Accessed June 2018].
4. bcrypt on GPU, Openwall community wiki, [Online]. Available: http://openwall.info/wiki/john/GPU/bcrypt. [Accessed May 2018].
5. Biryukov A, Dinu D, and Khovratovich D, “Technical report: argon and argon2: password hashing scheme,” 2015. [Online]. Available: https://password-hashing.net/submissions/specs/Argon-v2.pdf.