Computer hardware isn't built to last forever. With considerably short life cycles, storage devices will degrade over time and reach their end-of-life (EOL) around three to five years. For IT professionals overseeing data storage and maintenance, hardware obsolescence can be troublesome, as this requires them to ensure sensitive data is properly deleted from all storage media.
Data sanitization is the process of removing sensitive data from a system or network. It involves purposely destroying or deleting data from a storage device, to ensure it cannot be recovered. Proper data sanitation is imperative to preserve the privacy and confidentiality of a company’s information and its clients.
Below we share four primary methods to achieve data sanitation along with pros and cons:
Data erasure is also referred to as overwriting. This software-based method completely destroys all electronic data by using binary patterns of zeros and ones to overwrite data on the storage device. This method is great for those looking to wipe digital data without damaging the data storage device. The data erasing software also provides an auditable report of destruction, which adds an extra layer of security.
Our takeaway: Data erasure is a great solution if you are in a secured environment and you want to give a laptop to the new hire without compromising the previous owner's data. Otherwise, the time suck and incompatibility of use on SSD or USB drives make this an ever-fading solution to true data erasure.
Another form of data sanitation is cryptographic erasure. This technique uses public-key cryptography to encrypt all the data on the device. The encryption algorithm must be a minimum of 128 bits for the process to succeed. The original key is then deleted, effectively erasing all data from the device. Without the key, the data can never be decrypted again.
Our takeaway: Cryptographic erasure becomes much like a safe. It's great for storage and most likely won't be broken into. The problem comes in when the combination isn't remembered...and now your safe is useless.
Data masking, also known as data obfuscation, is a way of creating fake versions of the data that cannot be easily identifiable or reverse engineered. Modified versions of data are created, which retain the complexity and unique characteristics of the original sensitive data.
Data masking techniques include
The goal is to create a secure output that cannot be deciphered.
Our takeaway: Data masking is far from DIY...it's complex and slow. If you have time on your hands, then by all means. If you are in the middle of a data center clean-out, then we would advise leaving it to a professional vendor.
Physical data destruction is the process by which all hard disk drives (HDD) and storage media are physically destroyed. This is irreversible if done properly.
Some of the primary methods include
As one of the most effective ways to destroy data, this physical destruction provides a high probability that data can never be retrieved or reconstructed.
Our takeaway: Physical destruction is absolute protection. However, with environmental, health, and loss of precious materials to consider, you may want to leave this to a professional service. Yes, drilling a hole in your iPhone may make you feel cool until you realize that the volume of e-waste generated worldwide is an estimated 57.4 million metric tonnes.
When a company’s IT assets reach the end of their lifespan, they must be sanitized in order to safeguard any stored sensitive data, before disposal or reuse. To avoid exposing sensitive company data, IT professionals must ensure they have a reliable data sanitation strategy in place that provides an audit trail with a data destruction certificate.
If you are a DIYer, you most likely need an ITAD process and an audit trail.
An audit trail is a step-by-step record of the history and details made to a database or file. A data destruction certificate is an audit document that provides proof that all your confidential information has been securely destroyed.
When selecting a data sanitation method, it’s important to consider one that provides a data destruction certificate. This guarantees that items are successfully destroyed and ensures your company remains compliant with privacy laws.
If you’re in need of a fast and easy solution to your growing end-of-life hardware problem, reach out to our experienced team to learn which method is best for you here.
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