we are reviewing our data leakage controls and there is a point in policy regarding uploading company data to 'cloud storage; (e.g. forbidden). There are tight controls on USB/DVD/Email etc, but I was wondering:
1) what the common/free cloud storage solutions are in 2019, and..
2) as a company from a policy enforcement perspective, is it as simple as blocking access to those cloud storage websites via your web filter/proxy to enforce this, or is it a bit more complicated than that. And if there is more to it, what other types of controls need to be in operation.