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New 6-days Validity of Let’s Encrypt Certificates
I just saw this great news: Let’s Encrypt Announces 6-day Validity Certificates Let’s Encrypt, the non-profit certificate authority, has introduced six-day validity certificates, commonly referred to as short-lived certificates. Shorter validity periods are great for security. Traditional certificates can last up to a year, meaning if they get compromised, they remain a threat for a…
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Don’t Believe Everything …
We’ve all been there: listening to a talk, podcast or reading about groundbreaking innovations, especially on LinkedIn. It all sounds fantastic, super new, cutting edge technology – almost too good to be true. And often … it is. Overselling seems to be more common lately – or maybe I’m just noticing it more? Especially with…
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Tim Berners-Lee is on Mastodon
I’m hardly following any very well-known people on any social media – but I was positively surprised to see Tim Berners-Lee (@timbl@w3c.social) on Mastodon! Well for the unlikely event that you don’t know what we owe him, check out his Wikipedia entry: Sir Timothy John Berners-Lee (born 8 June 1955),[1] also known as TimBL, is an English computer scientist best…
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Kill It with Fire – Manage Aging Computer Systems
I just noticed that I never made a book recommendation, even though I’m reading quite some books – well okay, not too many IT books to be honest. A while ago a – very valued – colleague recommended Kill It with Fire – Manage Aging Computer Systems to me.
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RaspberryPi System upgrade vs. Fresh install
Recently I noticed that one of my RaspberryPIs was running a rather old version of Raspian. I thought it might be a good idea to upgrade and followed the instructions from Upgrade Raspberry Pi OS to the Latest Version (2024) – RaspberryTips.
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Are you ready to hear the Feedback you were asking for?
Feedback is a double-edged sword – powerful for growth but tough to hear. Whether it’s improving a skill, leading a team, or refining creative work, feedback is invaluable. Yet, how we react to it can make or break the result.
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How to enable automatic updates on Linux / RaspberryPi
I just noticed that I haven’t logged on to one of my RaspberryPIs for quite a while and also didn’t update it. Instead of hacking some root crontab, a quick search brought this thread in the Raspi forums up: crontab update – Raspberry Pi Forums and unattended upgrades – How do I enable automatic updates?…
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How to reduce AdTracking with Fritz!Box filter lists for mobile devices
Problem: I am using Pi-Hole on my network to block quite a few ADs and trackers. However, the blocking does not work reliably on Android devices on our WiFi (This thread suggests that this also concerns Apple devices – but we don’t have any at home, though). I noticed this when I was researching some…