Modelleerimiskeele laienduste väljatöötamine turvalisuse riskide juhtimiseks äriprotsesside analüüsimisel
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Date
2013
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Tartu Ülikool
Abstract
Kaasaegsed infosüsteemide arendamise metoodikad hõlmavad erinevaid tehnilisi äriprotsesside modelleerimise meetmeid. Äriprotsesside modelleerimiseks kasutatav keel (BPMN) on tänapäeval muutunud üheks standartseks meetmeks, mis edukalt rakendatakse infosüsteemide loomisel ning edasi arendamisel selleks, et ettevõtete äriprotsesse kirjeldada ja modelleerida.Vaatamata sellele, et BPMN on hea töörist, mille abil on võimalik ettevõtte äriprotsesse mõistma ja esitama, see ei võimalda äriprotsesside modelleerimisel adresseerida süsteemi turvalisuse aspekte. Autor leiab, et see on BPMN nõrk külg, selle pärast, et turvalise infosüsteemi arendamiseks on oluline nii äriprotsesse kui ka süsteemi turvalisust vaadeldada tervikuna. Käesolevas magistritöös autor töötab välja BPMN 2.0 keele jaoks uusi elemente, mis edaspidi peavad võimaldama adresseerima turvalisuse temaatika süsteemi modelleerimisel. Autori pakutud lahendus põhineb BPMN modelleerimiskeele seostamisel turvalisuse riski juhendamise metoodikaga (ISSRM). Antud magistritöös rakendatakse struktureeritud lähenemine BPMN peamiste aspektide analüüsimisel ja turvalisuse riskide juhtimiseks uute elementide väljatöötamisel, selleks ühildades BPMN ning ISSRM-i kontsepte.
Magistritöös on demonstreeritud väljatöötatud lisaelementide kasutus, selgitatud kuidas antud elementidega laiendatud BPMN võimaldab väljendada ettevõtte varasid (assets), nendega seotuid riske (risks) ja riskide käsitlust (risk treatment). See on analüüsitud internetkaupluse varade konfidentsiaalsuse, terviklikkuse ja kättesaadavuse näitel. Autor on veendunud, et BPMN laienemine turvalisuse kontseptide osas ja antud töö raames tehtud konkreetsed ettepanekud aitavad infosüsteemide analüütikutele mõistma kuidas süsteemi turvalisust arendada nii, et läbi äriprotsessi tuvastatud olulisemate ettevõtte varade turvalisus oleks infosüsteemis käsitletud ning tagatud. Autori poolt antud käsitlus on vaadeldud ka laiemas mõttes, nimelt, BPMN keelele pakutud laienemisega avaneb perspektiiv äriprotsesside ja turvalisuse mudeleite koosvõimele ning BPMN-i teiste modelleerimise metoodikatega, nagu ISSRM või Secure Tropos, integreerimisele.
Modern Information System (IS) development supports different techniques for business process modelling. Recently Business Process Model and Notation (BPMN) has become a standard that allows modelers to visualize organizational business processes. However, despite the fact that BPMN is a good approach to introduce and understand business processes, there is no opportunity to address security concerns while analysing the business needs. This is a problem, since both business processes and security concerns should be understood in parallel to support a development of the secure systems. In current thesis we introduce the extensions for BPMN 2.0 regarding security aspects. The following proposal is based on alignment of the modelling notation with IS security risk management (ISSRM).We apply a structured approach to understand major aspects of BPMN and propose extensions for security risk management based on the BPMN alignment to the ISSRM concepts. We demonstrate the use of extensions, illustrating how the extended BPMN could express assets, risks and risk treatment on few running examples related to the Internet store assets’ confidentiality, integrity and availability. We believe that our proposal would allow system analysts to understand how to develop security requirements to secure important assets defined through business processes. We also attempt to observe the following approach in the broader sense and we open a possibility for the business and security model interoperability and the model transformation between BPMN and another modelling approach also aligned to ISSRM, Secure Tropos.
Modern Information System (IS) development supports different techniques for business process modelling. Recently Business Process Model and Notation (BPMN) has become a standard that allows modelers to visualize organizational business processes. However, despite the fact that BPMN is a good approach to introduce and understand business processes, there is no opportunity to address security concerns while analysing the business needs. This is a problem, since both business processes and security concerns should be understood in parallel to support a development of the secure systems. In current thesis we introduce the extensions for BPMN 2.0 regarding security aspects. The following proposal is based on alignment of the modelling notation with IS security risk management (ISSRM).We apply a structured approach to understand major aspects of BPMN and propose extensions for security risk management based on the BPMN alignment to the ISSRM concepts. We demonstrate the use of extensions, illustrating how the extended BPMN could express assets, risks and risk treatment on few running examples related to the Internet store assets’ confidentiality, integrity and availability. We believe that our proposal would allow system analysts to understand how to develop security requirements to secure important assets defined through business processes. We also attempt to observe the following approach in the broader sense and we open a possibility for the business and security model interoperability and the model transformation between BPMN and another modelling approach also aligned to ISSRM, Secure Tropos.