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PROPORTIONALITY · A GUIDE FOR UK LAWYERS Proportionality in e Disclosure: When Is Enough Enough? Volume, Cost, Importance, Difficulty and Evidential Value COMPUTER FORENSICS LAB DISCOVERY. UK

§ ABOUT THE AUTHOR PREPARED BY COMPUTER FORENSICS LAB E-DISCOVERY TEAM FULL CHAIN-OF-CUSTODY DOCUMENTATION

§ CONTENTS In this guide 01 Executive summary 02 The problem in plain English: estates without endings 03 The legal framework: proportionality every where 04 Factor 1 · Volume 05 Factor 2 · Cost 06 Factor 3 · Importance 07 Factor 4 · Technical difficulty 08 Factor 5 · Evidential value 09 Running the balance: the argument in practice 10 Proportionality as strategy, in both directions 11 The stopping decision: when enough is demonstrably enough 12 Worked examples 13 Common mistakes and technical limitations 14 Questions to ask · Suggested wording 15 Checklist and red flags · When to involve a digital forensic expert 16 Frequently asked questions 17 Glossary · References · Disclaimer · How a specialist laboratory can assist

§ 01 · ORIENTATION Executive summary THE HEADLINE ANSWER: WHENISENOUGHENOUGH?

§ 02 · FIRST PRINCIPLES The problem in plain English: estates without endings

§ 03 · THELAW The legal framework: proportionality every where