Defense and detection MITM attacks can be prevented or detected by two means: authentication and tamper detection. Authentication provides some degree of certainty that a given message has come from a legitimate source. Tamper detection merely shows evidence that a message may have been altered and has broken integrity.
Defense anD DEtectIon Mitm Attacks can Be PrevEnted or deTEctEd by TWo meaNs: aUtHEntiCatiOn anD tamPeR detection. authenTiCatIOn proViDeS soMe degRee oF certainty That a given mesSage Has Come FRom a legiTImAte sOurce. tamPeR DetectiOn mEreLy sHoWs eViDEnCe thaT a messAGe May hAVe been aLtereD And has brokEn intEgriTy.