Checklist
Password testing
Service default credentials
Empty password or anonymous user login
Username as password
Service name/Webpage title/Hostname as username or password
cewl + john fuzzying for custom dictionary
Username/Password spraying
Weak passwords (letmein, admin123, test and similar)
Dictionary attack
Bruteforce from known password structure (inferred by registering a new user)
dumb user/password, try with empty password field too if accepted
Dumb passwords
Last updated