Guide
Android Secure Folders Knox And Manufacturer Security Containers
19 pages · 27 min read
Many Android phones feature a second, separately locked space, such as Secure Folder, Knox, or work profiles.
- Mobile and messaging evidence
§ Guide
Android Secure Folders Knox And Manufacturer Security Containers
This guide explains how Android phones often contain a second, separately secured space, and why this is frequently where crucial evidence resides.
Ref · E-D · 2026 · §LIBClass · ConfidentialJuris · England & WalesStatus · Active
Guide · 19 pages · 27 min read · Published 2026-09-02
Designed for UK legal practitioners navigating mobile device evidence, this reference addresses the risk of critical material remaining hidden within isolated secondary environments on Android smartphones. Modern devices frequently contain Samsung Knox Secure Folders, manufacturer private spaces, or work profiles that act as a second phone inside the main device, housing separate messaging accounts, applications, photos, and files behind distinct credentials. Explaining both technical and procedural requirements, the material examines how these security containers are protected, techniques for detecting them through system profile records, and methods for reaching them lawfully while preserving full chain of custody. Beyond local device storage, it details the wider source architecture across cloud backups and maker artefacts, honest technical limitations, and common mistakes made during investigations. Through worked examples, practical checklists, and suggested wording for interrogatories aimed at clients, opponents, and e-Discovery providers, the text equips legal professionals to identify concealed data, evaluate red flags, and determine precisely when to instruct a digital forensic specialist.
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Page 1
SECUREFOLDERS & CONTAINERS · A GUIDE FOR UK LAWYERS Android Secure Folders, Knox and Manufacturer Security Containers A Second, Separately Locked Phone Inside the Phone, and Why It Is So Often Where the Evidence Is COMPUTER FORENSICS LAB
§ 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: a second phone inside the phone 03 The containers: Secure Folder, Knox, private spaces and work profiles 04 How containers are secured 05 Finding the container and reaching it law full y 06 What a container holds, and honest limits 07 Deployment: the concealed second life 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: many Android phones carry a second, separately secured space, Samsung's Knox-based Secure Folder, other makers' private spaces, or Android's work profile, each a second phone inside the phone with its own apps, second-account messaging, photos and files, sealed behind its own credential and keys and must be looked for on every device and reached law full y.
§ 02 · FIRST PRINCIPLES The problem in plain English: a second phone inside the phone
§ 03 · THECONTAINERS The containers: Secure Folder, Knox, private spaces and work profiles
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§ 04 · HOWCONTAINERSARESECURED How containers are secured
§ 05 · FINDINGANDREACHING Finding the container and reaching it law full y
§ 06 · WHAT IT HOLD S What a container holds, and honest limits
§ 07 · DEPLOYMENT Deployment: the concealed second life
§ 08 · THEWIDERMAP Source architecture: where else the evidence lives EVIDENCE COUNTERPARTS INSIDE THE PROFILE ACCOUNTS' BACKUP USAGE CONTAINER (SYSTEM CLOUD S / (MAKER ARTEFACTS MAIN SECOND CONTAINER RECORDS) PROVIDER S CLOUD)
§ 09 · IN THE WILD Worked examples EXAMPLE1 · THEUNLOCKEDPHONEWITHTHELOCKEDFOLDERINSIDE EXAMPLE2 · THECONTAINERTHATSTAYEDSHUT, ANDTHEACCOUNTSTHATDIDNOT EXAMPLE3 · THECONTAINERTHATWASAWORKPROFILE, READFAIRLY
Page 3
§ 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 2. Please, preserving the device's state and integrity: (1) detect from the system's user, profile, package
§ 12 · QUICK CONTROL Checklist and red flags · When to involve a digital forensic expert The security-container checklist Red flags When to involve a digital forensic expert
§ 13 · COMMON QUESTIONS Frequently asked questions What is a Secure Folder or security container? If the phone is unlocked, isn't everything accessible? How do you find a hidden container? Can the container be broken into? If the container stays locked, is the evidence lost? Does having a container prove someone was hiding something?
§ 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
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