https://www.sans.org/white-papers/34445/
This SANS whitepaper discusses the use of Public Key Infrastructure (PKI) to meet business, regulatory, and compliance requirements.
https://blog.techprognosis.com/evaluating-web-browser-security/
This blog post discusses some of the web browser security settings options.
https://www.techtarget.com/searchsecurity/tip/2019s-top-email-security-best-practices-for-employees
This article offers some simple tips on securing email from both administrative and end user perspectives.