mˈɛmɚɹi ɪz pɹətˈɛktᵻd fɹʌm mɐlˈɪʃəs dɪvˈaɪsᵻz ðæt ɑːɹ ɐtˈɛmptɪŋ dˌiːˌɛmˈeɪ ɐtˈæks ænd fˈɔlti dɪvˈaɪsᵻz ðæt ɑːɹ ɐtˈɛmptɪŋ ˈɛɹənt mˈɛmɚɹi tɹˈænsfɜːz bɪkˈʌz ɐ dɪvˈaɪs kænˈɑːt ɹˈiːd ɔːɹ ɹˈaɪt tə mˈɛmɚɹi ðæt həznɑːt bˌɪn ɛksplˈɪsɪtli ˈæləkˌeɪɾᵻd mˈæpt fɔːɹ ɪt.
Memory is protected from malicious devices that are attempting DMA attacks and faulty devices that are attempting errant memory transfers because a device cannot read or write to memory that has not been explicitly allocated (mapped) for it.