I think this article in several places equates actively deleting your browser history with using an incognito mode in chrome, or another method of automatically

I think this article in several places equates actively deleting your browser history with using an incognito mode in chrome, or another method of automatically deleting, or even preventing the creation of history all together. This is not the case, you are perfectly fine having a system that will automatically delete your history, at least for now, it's not illegal to do that. This is also why many companies have a very precise document destruction procedures. I used to run a company that was involved in the document management industry. Many companies track very closely the lifecycle of every document they create, and many have programs that will purge the document literally on the day when it can be delete. If you have to keep a document for 7 years, there are systems that will purge that document at midnight on the 7th anniversary of it's creation. This is perfectly legal as long as it's all automatic. I think under Sarbanes-Oxley you do have an obligation to preserve evidence once the investigation is open, so you would have to disable the automated system. But as long as your documents are destroyed as soon as it's legally possible, you are basically covered.