softwareCredsLocation

firefox:

• bookmarks n stuff in ~/.mozilla/firefox/<profile_folder>/places.sqlite
• creds in ~/.mozilla/firefox/<profile_folder>/logins.json
• creds encryption key in ~/.mozilla/firefox/<profile_folder>/key4.db

chrome

• bookmarks in ~/.config/google-chrome/Default/Bookmarks
• creds in ~/.config/google-chrome/Default/Login Data

system

• env variables
• config files
  • /etc/ (Linux)
    • /etc/passwd → user accounts (hashes usually in /etc/shadow)
    • /etc/shadow → password hashes (root-only)
    • /etc/ssh/ssh_config & /etc/ssh/sshd_config → key locations and configs
    • /etc/mysql/my.cnf → DB creds
    • /etc/postgresql/ → DB creds
    • /etc/nginx/, /etc/apache2/ → basic auth files
  • App configs in user directories:
    • ~/.config/ or ~/.<app> folders (e.g., ~/.aws/credentials, ~/.gitconfig)