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PURVIEWVSINDEPENDENTCOLLECTION · A GUIDE FOR UK LAWYERS Microsoft Purview or Independent Forensic Collection? Choosing the Right Collection Route for a Microsoft 365 Matter: and Defending the Choice Afterwards COMPUTER FORENSICS LAB
§ ABOUT THE AUTHOR PREPARED BY COMPUTER FORENSICS LAB E-DISCOVERY TEAM INDEPENDENT / COURT-APPOINTED EXAM IN AT I ON CPR PART 35 EXPERT REPORT S FULL CHAIN-OF-CUSTODY DOCUMENTATION
§ CONTENTS In this guide 01 Executive summary 02 The problem in plain English: the fork every M365 matter reaches 03 What Purview does well: and where it bites 04 What independent collection adds: and what it costs 05 The decision framework: trust, structures, downstream 06 Hybrid patterns that dominate real practice 07 Defending the choice: the record that survives the CMC 08 Source architecture: where else the evidence lives 09 Worked examples 10 Common mistakes and technical limitations 11 Questions to ask · Suggested wording 12 Checklist and red flags · When to involve a digital forensic expert 13 Frequently asked questions 14 Glossary · References · Disclaimer · How a specialist laboratory can assist
§ 01 · ORIENTATION Executive summary THE HEADLINE POINT: PURVIEWFORSCOPE, INDEPENDENCEFORTRUST, HYBRIDSFOR MOSTREALMATTERS
§ 02 · FIRST PRINCIPLES The problem in plain English: the fork every M365 matter reaches
§ 03 · THEHOUSETOOLS What Purview does well: and where it bites
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§ 04 · THEOUTSIDEEXAMINER What independent collection adds: and what it costs
§ 05 · THEDECISION The decision framework: trust, structures, downstream
§ 06 · HOWITACTUALLYGOES Hybrid patterns that dominate real practice
§ 07 · THE PAPER Defending the choice: the record that survives the CMC
§ 08 · THEWIDERMAP Source architecture: where else the evidence lives EVIDENCE PARTY PURVIEW INDEPENDENT / END POINT COUNTERPART DELETED / ROUTE API ROUTE FORENSICS TENANTS RECOVERABLE THIRD- BACKUP
§ 09 · IN THE WILD Worked examples EXAMPLE1 · THESELF - COLLECTIONTHATCOULDNOTCARRYTHEWEIGHT EXAMPLE2 · THESTRUCTURESPURVIEWFLATTENED EXAMPLE3 · THECOUNTERSIGNEDMANIFEST
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§ 10 · WHEREITGOESWRONG Common mistakes and technical limitations Common mistakes Technical limitations
§ 11 · INTERROGATORIES & DRAFTING AIDS Questions to ask · Suggested wording Ask your client Ask your opponent Ask your e Discovery / forensic provider SUGGESTED WORDING · PROTOCOLCLAUSEONCOLLECTIONROUTE ( A DA PT )
§ 12 · QUICK CONTROL Checklist and red flags · When to involve a digital forensic expert The route-decision checklist Red flags When to involve a digital forensic expert
§ 13 · COMMON QUESTIONS Frequently asked questions Is Purview collection "forensic"? Will the court order independent collection if we ask? Can the two routes disagree about what exists? We already exported everything to PSTs last year. Do we start over? Does the choice differ for regulatory investigations or criminal matters? What single sentence should go in every M365 protocol?
§ 14 · REFERENCE Glossary Sources and authoritative references DISCLAIMER
§ HOW A SPECIALIST LABORATORY CAN ASSIST Working with Computer Forensics Lab Speak to a forensic examiner, not a salesperson. INSTRUCTTHELAB NEWENQUIRIESEMAILE - DISCOVERY
Cite as: Joseph Naghdi, Microsoft Purview Or Independent Forensic Collection, Computer Forensics Lab, https://e-discovery.uk/library/microsoft-purview-or-independent-forensic-collection/pdf.