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ce) "should become" -> "becomes" ; Archaic syntax again |
ce) I could not understand that sentence, so I have change it completely. |
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However, as any TAN can be used for any transaction, TANs are still prone to phishing attacks where the victim is tricked into providing both password/PIN and one or several TANs. Further, they provide no protection against [[man-in-the-middle attack]]s where an attacker intercepts the transmission of the TAN and uses it for a forged transaction.
Especially when the client system becomes compromised by some form of [[Antivirus software|malware]] that enables a [[Hacker (computer security)|malicious user]], the possibility of an unauthorized transaction is high.
== Indexed TAN (iTAN) ==
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