Exploring the browser cache
The browser cache involves storing sections of web pages for easier access/loading on subsequent visits, which can outline where you’ve been and what you’ve seen. Malware can be tailored to prey upon cache data as well.
Exabeam also considered location history and device discovery to be risky elements in their blog post, stating these could expose user location and other devices used.
Recommendations:
As with #1 and #4, incognito mode can also come in handy here, or manually clear the cache as needed, particularly after sensitive operations.