- Created by Michael Laurentius, last modified on Jan 23, 2024
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🎓 Purpose
Part of proper data and device (asset) management is the secure deletion (sanitization) and destruction of data when it is no longer required for a project and not suitable for preservation or subject to retention or archiving requirements.
👥 Audience
FACULTY RESEARCHERS ADMIN STAFF IT STAFF STUDENTS
Initial considerations
Should my data be preserved or archived, rather than deleted?
What is the classification of the data stored on the device? https://security.utoronto.ca/framework/standards/data-classification/
\uD83D\uDCD8 What can I do?
For confidential, sensitive, restricted, or regulated data (Level 3 or 4)
Data is unrecoverable only if stored on an encrypted device. Encrypt my devices or data
Delete a file
Sanitize a device
See Cross-platform options.
Delete a file
Sanitize a device
https://support.apple.com/en-ca/guide/disk-utility/dskutl14079/mac
Choose “most secure” under “security options”
Delete a file
Sanitize a device
Sanitize a device
Your motherboard or drive manufacturer might provide a proprietary sanitization utility.
Contact provider regarding secure data deletion pipeline.
Commercial shredding.
Ensure that you receive a Certificate of Destruction for your records.
For non-sensitive, non-public data (Level 2)
Data could be recovered with difficulty.
Delete a file
Delete all data from a device
Do not perform a “quick format”.
Delete a file
Delete file and empty Trash .
Delete all data from a device
https://support.apple.com/en-ca/guide/disk-utility/dskutl14079/mac
Do not select “fastest” under “security options”.
Delete a file
Delete all data from a device
Contact provider regarding secure data deletion pipeline.
Office or commercial shredding.
For public data (Level 1)
Data could be recovered with little difficulty.
Delete a file
Delete file and empty Recycle Bin.
Delete all data from a device
Delete a file
Delete file and empty Trash .
Delete all data from a device
Delete a file
Delete file
Delete all data from a device
Delete file within platform; wait for recovery period to expire .
Recycle and/or shred, if appropriate.
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✉️ Additional help
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