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Uma equipe de auditoria da Secretaria da Fazenda analisa o relatório de um incidente de seguranca da informacao ocorrido em um servico de autenticacao de contribuintes. O trecho a seguir foi extraido do documento tecnico:
"The authentication gateway logged a burst of requests originating from a single autonomous system. Although the credentials presented were valid, the requests exhibited an abnormal inter-arrival pattern and were replayed across distinct sessions within milliseconds. The incident response team classified the event as a credential stuffing campaign rather than a brute-force attack, because the attacker did not attempt to guess passwords; instead, previously breached username-password pairs were tested at scale. Consequently, the team recommended enforcing rate limiting, deploying a web application firewall with behavioral rules, and requiring multi-factor authentication for privileged accounts."
Com base na leitura rigorosa do trecho e nos fundamentos de seguranca da informacao, a analise correta do incidente e de suas contramedidas e:
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