What kind of measures should be taken for secure deletion of data?

Using shredding methods for digital files is essential for secure deletion because it ensures that the data is not only deleted but is irretrievable. Shredding typically involves overwriting the data multiple times with random data, making it very difficult for anyone to recover the original information. This process helps mitigate risks of data leaks or breaches by ensuring that sensitive information cannot be reconstructed or accessed after deletion.

In contrast, simply deleting files manually may not effectively remove the data from storage media. Often, the data remains recoverable until it is overwritten by new data. Archiving data indefinitely lacks an element of security, as it may expose sensitive information over time, especially if the archive is not properly protected. Memorializing data through backups does not provide a secure deletion format, as backups may hold onto old versions of data that should no longer be retained.

Thus, shredding methods for digital files represent best practices in securely deleting data, aligning with the principles set forth by regulations like the PCI DSS, which emphasize data security and privacy.