It looks like you’ve come across a "combo list" or a "hit list" often shared in underground account-sharing communities. The string typically refers to a batch of over 2,500 Disney+ accounts that have been verified by a cracking tool.
Hackers take emails and passwords from old leaks (like a random forum or a food delivery app). Automation: Bots try those same combinations on Disney+.
If you use the same password for everything, the bot "hits" a match.
Use a password manager (like Bitwarden or 1Password). Never reuse a password.
Université Jean Monnet