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When Systems Go Silent: Staying Connected During a Cyberattack

Imagine a cyberattack paralyzes your internal IT infrastructure – email, chat, and phone systems all go offline at once. How do you communicate? Many companies don’t have an answer until it’s too late. Using a fictional example, we’ll illustrate the consequences a communication outage can have during a cyber incident.

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A laptop screen turns black as chat messages report that systems are no longer accessible.
Two message cards: top with green WhatsApp icon and placeholder text, bottom with blue secure chat padlock icon and placeholder text.
Threema Work

Threema Work vs. WhatsApp: Not Every Messenger Is Suitable for Corporate Use

For many, WhatsApp has become the preferred messaging service in their everyday life. Even companies increasingly rely on the messenger for internal communication. However, using Meta’s chat app for business purposes can have serious risks for a company.

Threema Private

Open Letter to the British Government Regarding the Online Safety Bill

In addition to the EU’s so-called “chat control,” there’s another European draft legislation that uses child protection as a pretext for full-scale surveillance of chat communication without probable cause: the UK’s Online Safety Bill. Together with other messaging services, we take a firm stand against this legislative proposal.

Front view of smartphone displaying blueprint-style chat interface with text bubbles and audio waveforms.
Threema Private

Threema 5.0 for iOS: Fresh, Fast, Modern

Just like you occasionally replace old photos on the wall with new ones, apps also need a fresh touch every once in a while. Now, Threema’s iOS app presents itself in a new look: since the 4.8 update, the user interface has been renewed step by step. With Threema 5.0 for iOS, the complete rewrite of the chat view has now received its finishing stroke.

Illustration of a smartphone with four video call participants and a shield icon symbolizing secure connection.
Threema Work

Mobile Group Calls in the Business Context

If you need a fast response, a phone call is more efficient than a text message – this still holds true for the most part even though email, collaboration tools, and instant messengers have long become part of our communication habits. One-to-one and group calls, for example, allow you to discuss urgent matters quickly with one or several parties or update a project group on the latest developments while on the go.

Illustration of a secure password entry form with lock icon, masked characters, shield emblem and magnifying glass.
Threema Work

When Privacy Protection Is Not a Private Matter

In a world where life increasingly takes place online, the protection of privacy and personal data is also becoming more important. To put a spotlight on the significance of privacy protection, the international Data Privacy Day is held every year at the end of January. However, the topic remains relevant far beyond that day – and doesn’t only concern the private sphere.

Threema Private

New Merch Collection in Celebration of Data Privacy Day

Threema Private

Useful, Secure, and Versatile Notes in the Threema App

A group chat with you as the only member? What might sound useless at first is a handy feature in Threema: this “group” can be used as a versatile chat for personal notes. Find out in this blog post in what situations this empty group chat is particularly useful.

Threema Private

Statement on ETH Findings

Last year, a student at the Department of Computer Science at ETH Zurich wrote his master’s thesis on Threema’s communication protocol. ETH Zurich has now published his work as a paper/preprint. The presented findings have been addressed or no longer apply to Threema’s current communication protocol “Ibex.” None of them ever had any considerable real-world impact.

Threema Private

A Decade of Seriously Secure Messaging

Exactly ten years ago today, on 12/12/2012, the first ever Threema version was published in Apple’s App Store.