The best method to delete sensitive information from storage media that will be reused is multiple overwriting. This is because multiple overwriting ensures that the data is practically unrecoverable by any software or hardware means. Multiple overwriting involves writing 0s, 1s, or random patterns onto all sectors of the storage media several times, making the original data unreadable or inaccessible. There are various software programs available that can securely delete files from storage media using multiple overwriting techniques1.
Crypto-shredding is not the best method because it only works for encrypted data. Crypto-shredding involves deleting the encryption key used to encrypt the data, making the data unreadable and unrecoverable. However, if the data is not encrypted, crypto-shredding will not erase it2.
Reformatting and re-partitioning are not the best methods because they do not erase the data completely. Reformatting and re-partitioning only delete the file system structures and pointers that make the data accessible, but the data itself remains on the storage media and can be recovered using data recovery software

Source code synchronization is the process of ensuring that the source code and the object code (the compiled version of the source code) are consistent and up-to-date1. When program changes are implemented, the source code should be recompiled to generate a new object code that reflects the changes. However, if the source code is not recompiled, there is a risk that the object code may be outdated or incorrect. A compensating control is a measure that reduces the risk of an existing control weakness or deficiency2. A compensating control for source code synchronization is to compare the date stamping of the source and object code. Date stamping is a method of recording the date and time when a file is created or modified3. By comparing the date stamping of the source and object code, one can verify if they are synchronized or not. If the date stamping of the source code is newer than the object code, it means that the source code has been changed but not recompiled. If the date stamping of the object code is newer than the source code, it means that the object code has been compiled from a different source code. If the date stamping of both files are identical, it means that they are synchronized.