The evaluation of the vulnerability of telecom networks will be presented by reviewing telecom network failures due to hacking, human error, faulty software and poor practices with un-intended outcomes. This analysis will identify potential network weaknesses that can be exploited by third parties. selected weaknesses will then be used as a benchmark for the Vulnerability assessment. New types of threats based on recent design flaws will also be presented. The vulnerability assessment will be based on a comparison of performance data published in the media and in current network designs, with the benchmarks selected for this presentation.