How to Securely Dispose of Old Devices: Protect Your Personal Information

Posted by Security Team on

Our electronic devices are treasure troves of personal information, including sensitive data like bank account details, passwords, and confidential documents. As we upgrade our devices, it's essential to ensure that we securely dispose of our old ones to prevent identity theft, unauthorised access, and other security risks. In this blog post, we'll provide our top tips to help you safely discard your old devices, keeping your personal information protected.

Create a Backup

Before disposing of your old device, make sure to create a backup of all your important data. This can be done using cloud storage services, external hard drives, or even flash drives. Don't forget to back up your photos, videos, documents, and any other data that you'd like to keep.

Log Out and Unlink Accounts

To prevent unauthorised access to your personal accounts, make sure to log out of all your accounts on the device. This includes email, social media, and any other apps or services that you've used. Additionally, unlink any connected devices, such as smartwatches or fitness trackers, and remove your device from your cloud account to prevent future syncing.

Perform a Factory Reset

A factory reset will return your device to its original settings, effectively erasing all your personal data. This step is crucial to ensuring that no sensitive information is left on the device. The process for performing a factory reset varies depending on the device, so refer to the manufacturer's instructions to complete this step accurately.

Remove Physical Storage

If your device has a removable storage component, such as an SD card or SIM card, make sure to remove it before disposing of the device. These cards can contain personal information and should be either securely stored or destroyed.

Destroy the Data

Even after a factory reset, skilled hackers can sometimes recover data from your device. To ensure complete data destruction, consider using specialised software to overwrite the device's storage with random data multiple times. For devices with hard drives, like computers, you can also physically destroy the hard drive by drilling holes or using a hammer to make the data unreadable.

Erasing HDDs (Spinning Disks)

When it comes to hard disk drives (HDDs), one method to securely erase data is to use a process called zero-filling or zeroing. This involves overwriting all the data on the drive with zeros, effectively wiping the data clean. There are various software tools available for this purpose, such as DBAN or CCleaner.

Also for more technically savy users one can use command line programs like dd, shred or dc3dd

Erasing SSDs (Solid State Drives)

Solid-state drives (SSDs) operate differently from HDDs, which means that the process of securely erasing data is not the same. Writing zeros to an SSD is not recommended due to the wear levelling mechanism, which helps distribute write and erase cycles evenly across the memory cells. This mechanism can make it difficult to overwrite specific data, potentially leaving traces of sensitive information behind.

Instead of writing zeros, it's recommended to use a feature called Secure Erase (also known as ATA Secure Erase) if the SSD supports it. Secure Erase is a command built into the SSD's firmware that completely wipes the drive by erasing all NAND flash memory cells. This process ensures that no data can be recovered from the SSD. To use Secure Erase, you will need specific software tools like Parted Magic or command-line utilities, depending on your operating system.

Recycle or Donate

When disposing of old devices, it's essential to do so in an environmentally responsible manner. Many electronic devices contain hazardous materials that can be harmful if not disposed of properly. Contact your local recycling centre to inquire about their e-waste recycling program, or consider donating your device to a charity or organisation that can repurposed it for those in need.

Bonus Tips

Tip 1: Keep Track of Your Devices

Maintain an inventory of all your electronic devices, including their make, model, and serial numbers. This will help you keep track of your devices and ensure that you securely dispose of them when they're no longer needed.

Tip 2: Always Encrypt Your Data

Encrypting your data before disposing of your device adds an extra layer of security. Even if someone manages to recover data from your device, they won't be able to access it without the encryption key. Most modern operating systems offer built-in encryption tools, such as BitLocker for Windows, FileVault for macOS or LUKS encryption for Linux.


Properly disposing of old devices and protecting your personal information has become more critical than ever. By understanding the differences between erasing HDDs and SSDs, following our guide, and applying the additional tips provided in this blog post, you can ensure that your data is securely erased and that your old devices are discarded responsibly.

Taking the necessary precautions to protect your personal information not only helps prevent identity theft and other security risks but also contributes to a more sustainable and environmentally friendly approach to electronic waste management.

Additionally, our range of privacy and security products, such as Faraday bags, offers further protection for your devices and sensitive information.

Invest the time and effort to securely dispose of your old devices, and enjoy the peace of mind that comes with knowing your personal information remains protected.

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