Companies use cloud storage services DrobBox, Box and SugarSync, a study shows. Documents retrieved from these services were stored in cache, where they remained until the storage limit was reached. The study has its flaws, including the use of older versions of iOS and Android devices. Some data would still be accessible, either by someone who stole the phone or to malware that gained root access to the device. AnyDO, a business and personal calendar tool, is susceptible to man-in-the-middle attacks.”]
Source: https://www.csoonline.com/article/2133081/data-leakage-risk-rises-with-cloud-storage-services.html