Fraud Activites Identified

• DISA (Direct Inward System Access)
• Call forwarding, voicemail and auto-attendant (Dial Through Fraud)
• Calls to the maintenance port
• Calls to unexpected destinations
• Calls during company holidays or out-of-hours
• Large numbers of short duration incoming calls (war dialing)
• Network breakout (trunk to trunk calls)
• Calls exceeding particular thresholds (cost, duration, volume)