US-CERT is the national computer security incident response team (CSIRT) for the United States of America.
jˌuːˈɛssˈɜːt ɪz ðə nˈæʃənəl kəmpjˈuːɾɚ sᵻkjˈʊɹɹᵻɾi ˈɪnsɪdənt ɹᵻspˈɑːns tˈiːm sˈiːsˈɜːt fɚðə juːnˈaɪɾᵻd stˈeɪts ʌv ɐmˈɛɹɪkə.