The Question Nobody Asks Until It’s Too Late
Privacy vs. Security — The Architecture of Trust
Most people pick their business email the same way they pick a bank. They go with whoever their friends use, whoever has the slickest app, whoever was already running when they started the business. The decision happens once, costs about ten minutes of thought, and then lives in the background for years while far more urgent things demand attention.
That is completely understandable. It is also worth revisiting.
Not because your current setup is necessarily wrong. But because “secure” — that word every provider plasters across their homepage — actually means two different things, and most of us have only ever thought about one of them.
I spent some time this week going deep on a question that came up in our community: is Proton actually more private and secure than Google Workspace or Microsoft Office 365 for a business? The conversation kept producing good follow-up questions. What happens when you email someone on Gmail? What ever happened to PGP? Can you still use Outlook if you want real encryption? One thread pulled another until there was enough material to justify sitting down and writing it all out properly.
The result is a whitepaper I am calling Privacy vs. Security: A Plain-English Guide to Proton, Google Workspace, and What Actually Protects Your Business. You can download it at the link below. The short version of what it covers is this.
Privacy and security are not the same word.
Security is the steel door. It keeps the burglar out. Google and Microsoft are genuinely exceptional at this. They spend billions of dollars a year on cybersecurity infrastructure, employ some of the most skilled engineers in the field, and have unparalleled visibility into global threat patterns because they process so much of the world’s email. If your primary fear is a criminal trying to break into your systems, both platforms are extraordinary choices.
Privacy is something else entirely. Privacy is the blackout curtains. It is not about keeping the burglar out. It is about whether the landlord can see inside. Google and Microsoft hold the encryption keys to your data. This means they can read it if they choose to, or are legally required to. They are US companies subject to laws that allow quiet government data requests. Most businesses on paid plans will never feel this in any practical way. But the architecture makes it possible.
Proton’s architecture makes it impossible. When you save a file to Proton Drive or receive an email in ProtonMail, it is encrypted on your device before it ever reaches their servers. Proton does not hold a key. Not a spare, not a backup. If a government compels them to hand over your data, they hand over locked boxes. The math does not bend for court orders.
The Gmail problem is real, and it trips people up.
One of the questions that came up in the original conversation was exactly the right one: if I use Proton for its encryption but I email people who use Gmail, does that break the protection? Yes, for those specific messages. End-to-end encryption only works when both sides have matching keys. When your Proton email lands on Google’s servers, Google receives it in a readable format. The privacy shield was intact on your end. It ends where Gmail begins.
This does not make Proton useless for mixed communication. Everything stored on Proton stays encrypted. Your Proton-to-Proton messages are completely sealed. And Proton built a password-protected email feature specifically for sending sensitive information to people who do not use Proton. The whitepaper covers all of this in detail, including exactly how the feature works.
Proton is essentially PGP with the annoying parts removed.
PGP — Pretty Good Privacy — was invented in 1991. The mathematics behind it have never been broken. In the early days of email, it was the gold standard for secure communication, used by security researchers, journalists, activists, and anyone else who genuinely needed privacy. It never went mainstream because using it was genuinely painful. You had to manually generate keys, share them with every contact, and decrypt messages through a separate piece of software. Convenience won. People chose Gmail.
Proton was built by scientists who met at CERN in Switzerland. They looked at PGP and recognized that the cryptography was perfect and the user experience was broken. So they automated everything that made it painful. Your keys are generated when you create an account. Decryption happens invisibly when you open a message. You never see the math. The result is a system that has the same mathematical foundations as 1990s PGP with none of the 1990s friction.
The whitepaper also covers how to use traditional PGP today if you want to, including options for Thunderbird, Apple Mail, and Outlook, plus the Proton Mail Bridge for people who want Proton-grade encryption without changing their email client.
The question that actually matters: what are you protecting against?
Security professionals call this a threat model. It sounds technical. It is not. It just means: what, specifically, are you afraid of?
If your primary concern is cybercriminals, phishing attacks, ransomware, and accidental data exposure, Google Workspace and Microsoft 365 are genuinely excellent answers. They have the detection infrastructure, the integrations, and the collaboration tools that make daily work faster and more resilient. On a paid plan with two-factor authentication enforced, they represent a high standard of protection against the threats most businesses actually face.
If your primary concern is confidentiality from institutions — governments, regulatory bodies, litigation, competitive intelligence — then the mathematical certainty of zero-access encryption is worth the trade-offs in functionality. Law firms, healthcare providers, investigative journalists, anyone handling intellectual property in high-stakes markets. For these cases, Proton’s architecture is not a preference. It is a structural requirement.
Many businesses are somewhere in the middle, which is why the whitepaper ends with a note that these platforms do not have to be mutually exclusive. Some businesses run both: Proton for sensitive communications, Google or Microsoft for daily operational work. The point is to make the decision consciously rather than by default.
The whitepaper is formatted for easy reading and does not assume any technical background. Tables compare the platforms directly across the features that matter most. Every analogy is written for someone who has never had to think about encryption before and, ideally, will not need to again once they understand the basics.
Download it below. Share it with anyone in your life who has ever asked you whether they should switch to Proton, or wondered whether Google is actually reading their emails, or just quietly assumed that “secure” on a marketing page means the same thing every time.
It does not. Now you know why.
https://www.ryan-hunt.com/resources/authorial-transparency-statement
[Download the whitepaper: Privacy vs. Security — A Plain-English Guide]