During a hacking debate at InfoSecurity Europe yesterday, black hat hacker KP said that when he broke into a network he did so 90 per cent of the time through an unprotected modem, often through war dialling.

War dialling involves systematically trying to locate the numbers associated with corporate modems through testing each extension of a corporate phone system in turn.

"Intrusion detection systems are no real deterrent for me because I get in through the back door," he said. "Many networks are constructed like Baked Alaska - crunchy on the outside and soft in the middle."


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