university of sunderland comm80 risk assessment of systems changeunit 12 risk of change: networks...
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University of Sunderland COMM80 Risk Assessment of Systems Change Unit 12
Risk of Change:Risk of Change:Networks and Software Networks and Software
COMM80: Risk Assessment of Systems Change
Unit 12
University of Sunderland COMM80 Risk Assessment of Systems Change Unit 12
Objectives of Objectives of Session CoverageSession 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 Change Unit 12
The Impact of The Impact of Network FailureNetwork Failure
• Network Failure• Data Loss
University of Sunderland COMM80 Risk Assessment of Systems Change Unit 12
Dealing with the RiskDealing 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 Change Unit 12
Software Change Affected Software Change Affected by the Network: by the Network: Bandwith ExampleBandwith 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 Change Unit 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poor that it was immediately withdrawn.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 Software Change Affected by the Network: by the Network: Bandwith ExampleBandwith Example
University of Sunderland COMM80 Risk Assessment of Systems Change Unit 12
Software Change Affected Software Change Affected by the Network: by the Network: Network Network
Security.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 Change Unit 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 Software Change Affected by the Network: by the Network: Network Network
Security.Security.
University of Sunderland COMM80 Risk Assessment of Systems Change Unit 12
Network Change Affecting Network Change Affecting Software SystemSoftware System
• Wearhill University:– Business development unit (BDU) reps work
from home and customers’ premises. – Heavily reliant on emails.
• 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 Change Unit 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 e-mail 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 Network Change Affecting Software SystemSoftware System