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Threema Private

What’s behind the current wave of cyberattacks?

Over the past few days and weeks, numerous cyberattacks have made headlines. In Switzerland alone, pension funds, the Swiss Broadcasting Corporation (SRG), and the online magazine “Republik” have been affected. In Denmark, 8.8 million personal records were stolen from the central population register, while in France, hackers shut down refrigerators in 150 supermarkets. What’s behind this surge in attacks?
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Threema Private

Privacy Tips from the Threema Team – Part 2

There are various ways to protect your online privacy. With so many approaches available, it pays to get tips from people who deal with the subject on a daily basis. Here is part two of the best privacy tips from the Threema team.
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Threema Private

Privacy Tips from the Threema Team – Part 1

If you search the Internet for tips on protecting your online privacy, you’ll find plenty: set a unique password for each service, download updates as soon as possible, and use privacy-friendly alternatives to Big Tech. That’s certainly a great start, but there’s more to it. In this post, we’ve compiled some of the best privacy tips from the Threema team – ranging from general advice to very specific measures.
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Threema Private

DDoS Attacks on Threema

If you use Threema regularly, you may have noticed that the service was temporarily unavailable or only partially available on Tuesday evening and Wednesday morning. This was due to a series of DDoS attacks. Below, we explain what happened and outline the measures we’ve taken.
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Threema Private

Messenger Interoperability: Well-Intended, but Bad for Data Privacy

WhatsApp has been open to third-party messaging services since fall 2025. Under the EU’s Digital Markets Act (DMA), the platform is required to support interoperability with alternative chat services. While we support the DMA’s underlying goals, we have decided not to implement interoperability with WhatsApp for several reasons.
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Threema Private

World Emoji Day: Our Emoji Pet Peeves

When the calendar emoji shows the correct date, it’s World Emoji Day. 📅 The cute little pictograms are hugely popular and shape the way we communicate in chats. Yet despite – or perhaps because of – their popularity, they also give rise to a number of minor pet peeves. Here’s a non-exhaustive (and not entirely serious) overview.
Threema Private

Anonymity at the System Level – The Ultimate Privacy Protection

More and more messaging apps are introducing usernames, allowing users to communicate without having to share their phone number with everyone. This is certainly a step in the right direction. However, it’s not enough to provide comprehensive privacy protection. To protect users’ privacy, anonymity has to be part of the system architecture.
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Threema Private

Survey Feed: Involving Users in the Development Process

To better tailor the Threema app to our users’ needs, we’re introducing a new survey feed in the Threema Channel. In this feed, periodic user surveys will be conducted to help us identify relevant features and implement them in the best possible way.
Threema Private

#DeleteWhatsAppDay: More Relevant Than Ever

Five years ago today, on May 15, 2021, WhatsApp’s controversial new privacy policy came into effect. The update sparked global criticism and raised public awareness of the economic incentives behind data-driven online platforms. With users spending more time online, ever-growing volumes of data, and powerful new AI systems, the concerns raised back then are now even more justified than in 2021.

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