English is my second language but i used to think security bypass means breaking the protection. Especially considering the title focuses on the messengers.

"Bypass" means to go around something in order to avoid it. If there was a traffic jam on the highway, you could bypass it by exiting the highway and traveling down a side street.

"Bypassing encryption" then would mean to avoid the encryption step. Maybe it has a different meaning in the security community, but if taken literally, the phrase is accurate.