A male may open a backdoor.Logical formLearned from9 sentences. A backdoor can be asymmetric.Logical formLearned from8 sentences. A file may pertain-to a backdoor.Logical formLearned from8 sentences. A backdoor can be on port.Logical formLearned from8 sentences. Backdoors can be deliberate.Logical formLearned from8 sentences. A backdoor can be narrow.Logical formLearned from8 sentences. A backdoor may be accessed.Logical formLearned from7 sentences. A backdoor can be adolescent.Logical formLearned from7 sentences. A backdoor can be tight.Logical formLearned from7 sentences. Backdoors can be difficult.Logical formLearned from7 sentences. A rootkit may install a backdoor.Logical formLearned from7 sentences. A worm may open a backdoor.Logical formLearned from6 sentences. A backdoor can be into a system.Logical formLearned from6 sentences. A backdoor may listen on port.Logical formLearned from6 sentences. A worm may have a backdoor.Logical formLearned from6 sentences.