The problem with public pastebins
Pastebins are convenient for sharing stack traces and snippets, which is exactly why they are dangerous for everything else. Public pastes get crawled and indexed. Scrapers watch popular pastebin sites specifically to harvest leaked API keys, database URLs, and tokens within seconds.
Even private-looking pastes often sit unencrypted on the server, retained indefinitely, with a URL anyone who obtains it can open. For code that touches credentials, that is a leak waiting to be noticed.
How encrypted snippet sharing differs
An encrypted alternative flips the model. Your browser encrypts the snippet before upload, so the server stores only ciphertext it cannot read. The decryption key rides in the URL fragment, which browsers never send to the server, or travels to the recipient through a separate channel.
Add an expiration and a read limit, and a shared config stops being a permanent artifact. The recipient gets exactly what they need, the paste disappears when its job is done, and a crawler or scraper finds nothing worth taking.