Using others Wi-Fi connection
May one use his Neighbors Wi-Fi connection:
1. If it is unprotected (with no password)?
2. If it is protected (with a password)?
One may not use another’s wifi connection without his permission, whether it is secured or not. Today it is left unprotected only as an oversight or someone who is not informed how to properly protect his connection.
Even with permission it is questionable if this does not violate the internet providers policy of the service being for one household [if it is a temporary use with permission, that would seem to be fine].