An onion ring framework 137 rating the Ms, it is often a good idea to dedicate certain people as responsible for rating certain security layers. Figure 2 illustrated the M,'s spider diagram displaying scores against the five ms Figure 2 Spider diagram displaying scores against the five M,'s 5 4 54321 Once the layers and the ratings have been identified, the next step is to assess the m-commerce security of the system. To that end, a weighted measuring method can be developed to measure the respective m-commerce security levels. Given the five layers the complete formula can be simply stated as: where sl is the level of the m-comn This cumulative score is the summation of each individual layers security level. Such a security level can be measured by multiplying the security weight of the ith layer(Wi) with the security scale of that particular layer(Si). It is important to note that the weight of the ith layer(Wi)may vary among m-commerce systems because those numbers are based on the arbitrarily selected importance level given by experts or managers which satisfies the criteria 2i=l Wi=l. The scale of individual layers security(S)can be measured by asking the subject matter experts to answer some five-scale measurementAn onion ring framework 137 rating the Ms, it is often a good idea to dedicate certain people as responsible for rating certain security layers. Figure 2 illustrated the M’s spider diagram displaying scores against the five M’s. Figure 2 Spider diagram displaying scores against the five M’s Once the layers and the ratings have been identified, the next step is to assess the m-commerce security of the system. To that end, a weighted measuring method can be developed to measure the respective m-commerce security levels. Given the five layers, the complete formula can be simply stated as: SL = Σi = 15 Wi * Si where SL is the security level of the m-commerce system. This cumulative score is the summation of each individual layer’s security level. Such a security level can be measured by multiplying the security weight of the ith layer (Wi) with the security scale of that particular layer (Si). It is important to note that the weight of the ith layer (Wi) may vary among m-commerce systems because those numbers are based on the arbitrarily selected importance level given by experts or managers which satisfies the criteria Σi = 15 Wi = 1. The scale of individual layer’s security (Si) can be measured by asking the subject matter experts to answer some five-scale measurement question such as: 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 5 4 4 4 4 5 5 5 5