University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Risk of Change: Networks and Software COMM80: Risk Assessment of Systems Change Unit 12

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Objectives of Session Coverage To appreciate the impact networks and systems have on one another. To be aware of the need for risk assessment of these aspects.

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 The Impact of Network Failure Network Failure Data Loss

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Dealing with the Risk United we stand, Divided we fall (fail). So where is risk assessment of networks covered?

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Software Change Affected by the Network: Bandwith Example Framing Technology! (200 staff). Based in old Victorian hospital ward, Invested heavily in network installation. Call centre takes orders for bespoke picture frames.Use networked software. Moving to purpose built premises in one year. No more spend on the existing building.

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Software System Upgrade: –Written and tested in software consultancy’s premises. Worked fine. –At Framing Technology! performance was so poor that it was immediately withdrawn. –Upgraded PCs: didn’t help. –The network bandwidth could not support the requirements of the new software. Software Change Affected by the Network: Bandwith Example

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Software Change Affected by the Network: Network Security. Solaplex Windows:10 in factory, 5 in office. Bought in purchase order system. Peer to peer network environment. Software installed on all office PCs: data only on purchase order clerk’s PC. Implemented in March, operated well.

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 June: PO clerk away for 3 week break, un-contactable. Machines were powered down before he went. The following week data couldn’t be accessed: password unavailable. Impact: Delay in paying invoices, damaged reputation. Software Change Affected by the Network: Network Security.

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 Network Change Affecting Software System Wearhill University : –Business development unit (BDU) reps work from home and customers’ premises. –Heavily reliant on s. Network Project: –High speed internet connections to home, freephone number to ISP. –Access restricted to reps PCs: different addresses from those on campus. –System a success and within budget.

University of Sunderland COMM80 Risk Assessment of Systems ChangeUnit 12 University Network Change: –University “blacklisted” by ISPs: poor security allowed “spamming”. –Access restricted to on campus or dial-in users. –BDU reps couldn’t dial-in or access their via their ISP. –Network team wouldn’t change setup. –BDU’s “locked out”. Network change impacted on the BDU’s software and business. Network Change Affecting Software System