The following methods will help you tell whether your system has been targeted by toll fraud hackers:
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In the Global Administrator Management Console, check the Call Log in User/Group Management daily for multiple logon attempts. |
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A failed logon attempt will show as “logon - Abandoned”. |
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A successful fraudulent logon will typically show many long distance or international calls placed subsequently from that extension. |
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Check your phone bills carefully for international numbers or long distance numbers that you do not recognize. |
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Watch your Trunk Monitor (available on the Diagnostics tab of the Global Administrator Management Console) for sudden bursts where every line is busy with people trying to log on. |