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Durante uma revisão de logs, um auditor descobre uma série de logs que mostram falhas de autenticação, como descritas abaixo:
Jan 31 11:39:12 ip-10-0-0-2 sshd[29092]: Invalid user admin from remotehost passwd=orangeJan 31 11:39:20 ip-10-0-0-2 sshd[29098]: Invalid user admin from remotehost passwd=Orang3Jan 31 11:39:23 ip-10-0-0-2 sshd[29100]: Invalid user admin from remotehost passwd=Orange93Jan 31 11:39:31 ip-10-0-0-2 sshd[29106]: Invalid user admin from remotehost passwd=Orangutan1Jan 31 20:40:53 ip-10-0-0-254 sshd[30520]: Invalid user admin from remotehost passwd=OrangemonkeyQue tipo de ataque é que foi descoberto?