To prevent the accidental shredding of important files, the organization could have implemented several measures. Firstly, they could have established a more robust tracking system for paper files, such as implementing a barcode system or a log to keep track of file movements. This would ensure that files are not mistakenly identified for shredding. Additionally, they could have implemented a double-checking process before files are shredded, where a second employee verifies the files to be shredded against a list of files scheduled for disposal. Providing training to employees on the importance of accurate file management and the consequences of shredding the wrong files could also help prevent such incidents in the future.