The Proton Blog. Contributions to hacker culture and cybersecurity knowledge.

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Proton is privacy by default. Welcome to a better internet where privacy and freedom come first. Our encrypted services help you fight for a better internet that is secure and private by default.

17 July

What is a firewall? What does it do, and how does it work?

In this article, we look at what firewalls do, how they work, what they are used for, and examine different types of firewall.

15 July

How to conduct a password audit for your business

Learn how to conduct a password audit with a step-by-step framework to identify weak passwords, risky access, and poor credential hygiene.

15 July

Can your ISP see what you do? Yes, in more ways than you think

Learn how internet providers track you, even physically inside your home, and the steps you can take to protect your privacy.

15 July

Keep communicating through any downtime with Proton’s business continuity solution

Keep your team operational during outages with Proton Mail and Proton Meet: communication tools based in Switzerland.

10 July

A GDPR compliance checklist for small and medium-sized businesses

A detailed GDPR compliance checklist for SMEs. Follow this UK GDPR checklist to meet GDPR requirements and implement compliance controls.

10 July

How to turn off Face ID on iPhone — and when you should

Is Face ID safe and should you turn it off? Learn how to turn off Face ID, when you should do it, and why you might want to.

9 July

What are the worst spyware apps — and how do you spot them?

Spyware apps are designed to go undetected. Here are the 3 worst spy app types, how to detect them, and how to protect your device.

9 July

How to password protect an Excel file

A step-by-step guide on how to password protect an Excel file on Windows, Mac, and other ways to keep your files secure and private.

9 July

How to create a professional email address with a custom domain

Learn how to create a business email address, compare custom domain against provider options, and see examples.

8 July

After backlash, Meta removes Muse Image, its AI image generator, from Instagram

Meta pulled Muse Image, its AI image generator, from Instagram after backlash from users and Hollywood over consent and copyright.

Citrix Secure Access and Endpoint Client for Windows Vulnerability Enables Privilege Escalation

Cloud Software Group has disclosed two security vulnerabilities affecting Citrix Secure Access Client for Windows and Citrix Endpoint Analysis Client for (…)

18 July

New wp2shell WordPress Core Flaw Lets Unauthenticated Attackers Run Code

Updated July 18, 2026: the two flaws now carry CVE IDs, the full mechanism has been published, a persistent-object-cache condition has surfaced, and a (…)

17 July