2026.03.20
Why Factory Reset Is Not Enough to Protect Your Data
Factory reset leaves recoverable data on your phone or laptop. Here is what actually happens when you reset a device, and what it takes to permanently remove your personal data.
What Factory Reset Actually Does
When you perform a factory reset on your phone, tablet, or laptop, the device marks the storage space as available. It does not overwrite the data. The files, photos, messages, and passwords remain on the drive until new data happens to be written over them.
This means anyone with basic data recovery software (much of it free and publicly available) can retrieve your files after a standard reset.
What Remains After a Factory Reset
- Photos and videos
- Saved passwords and login tokens
- LINE and WhatsApp message history
- Banking app data and payment credentials
- ID card scans and personal documents
- Browser history and autofill data
What Does Remove Data Permanently?
A certified data wipe uses industry-standard methods to overwrite every sector of the storage device, making recovery impossible. Physical destruction goes further by rendering the storage media physically unusable.
Both methods result in a Certificate of Data Destruction that documents the process, the method used, and the date.
What You Should Do Before Selling or Donating a Device
If you plan to sell, donate, or throw away any device, have it professionally wiped or destroyed first. The risk of identity theft from recovered data is real, especially in regions with high rates of online fraud.
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