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by centizen
4060 days ago
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It will verify the number/extension called as being a valid target for further attacks. In most situations nothing worse than that would happen. I have however seen a slightly different breed of attack, where an attacker calls a victim (usually a switchboard attendant) and asks to be transferred to extension 9190. If this happens, they dial the rest of a 1-900 number and rack up charges. |
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