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Web3 is just expensive P2P
Web3 claims to be the only way to save us from commercial entities defining what we can see and what not. Yet, it does exactly this: It results in commercialized entities defining what we can see and what not.
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A business-driven blockchain evaluation flow chart
Yesterday, Rene Jan Veldwijk posted a blockchain decision flowchart he had previously used in a presentation.
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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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Upgrade ejabberd to the latest TLS security [UPDATE#2, 2014-06-05]
ejabberd is a very fine XMPP server. However, it has very few options to configure its SSL and TLS security settings away from the very weak OpenSSL defaults. The TLS Interposer makes securing TLS used by ejabberd a breeze.
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SMTP Smuggling Status
«SMTP Smuggling» is a vulnerability that allows to circumvent some mail checks at the receiver and therefore will allow additional spam and/or phishing messages through. Here is the list of what we currently know.
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Interoperable Chat in Your Web Browser: JSXC 3.0 released
Open, standards-compliant and interoperable chat sounds like a boon. However, proprietary and closed systems (WhatsApp, Facebook chat, Google Hangouts, …) are often easier to deploy, as they are nicely integrated in existing ecosystems. The freshly-released JSXC 3.0 shows that this is not necessary.
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Simple versioned TimeMachine-like backup using rsync
Over many years, I have dealt with scripts that do backup versioning, i.e., maintain multiple backups. Due to their flexibility, they have been complex to understand and configure. Here is a simple rsync-based tool with a different focus: The experienced systems administrator who wants to keep his system’s complexity down.