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Offline digital cash?
The question of using digital money in the event of a network outage comes up again and again. Here is an overview of the options and their pros and cons.
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Git, PGP, and the Blockchain: A Comparison
The Blockchain, a cryptographically linked list with additional restrictions, is often touted to be the most significant innovation towards democratization of the digital landscape, especially the Internet. However, the ideas did not come out of thin air, but have ancestors and relatives. An attempt at technological genealogy.
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NTS and dynamic IP addresses
Good news is that NTS relies on DNS names, no longer „naked“ IP addresses. But what happens when the DNS name changes, pointing to a different IP address? A look at the protocol, the Chrony source, and the implications.
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Transparent, Trustworthy Time with NTP and NTS
«Time is Money», as the old adage says. Who controls the time, controls all kinds of operations and businesses around the world. And therefore, controls the world. Today, we all take accurate time for granted. Even though, today, it is delivered over the Internet mostly unsecured. But this is easy to change.
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HomeCA: Scalable Secure IoT Network Integration
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Ransomware is different
While most types of malware such as viruses and botnets try to lay low for as long as they can, while doing their nasty work, ransomware is eager to do its work ASAP. Because of this, ransomware does not need to embed itself as deeply into the system. All it wants to do is to […]
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Einfache Zwei-Faktor-Authentisierung
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Fighting Ransomware with Guided Undo
Master Thesis
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Meltdown und Spectre: Lesen ohne zu lesen
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MoDeNA: Enhancing User Security for Devices in Wireless Personal and Local Area Networks
