There seems to be a fair amount of people in either extremes in the current AI landscape. At one side we see the “vibe coders” who use agents and allow them to merge code without any person even looking at the source, while on the other side of the field there are people who are against everything and anything even...

Getting curl developers and related enthusiasts into a single room to hang out in the real world for a whole weekend once a year is awesome. We find inspiration, we share experiences, we learn from each other and we dream and plan of future endeavors and things to work on. Seeing faces, hearing voices and watching...

I’m doing Open Source primarily because I love it. The social aspects, the for-the-good angle and for the challenge of engineering this to work for everyone. I also do it because it is my full-time job and getting food on the table and provide for my family is not unimportant. It may come as a shock, but I am not in...

One of the established power features of the curl command line tool is its support for “globbing”. It is a built-in way to specify ranges and sets in different ways and have curl iterate over them to simplify repeated transfers. For example, you can easily download three images from the same host without having to...

yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that Anthropic would not release this model to the public yet but instead trickle it...

In this era of powerful tools to find software bugs, we now see tools find a lot of problems at a high speed. This causes problems for developers, as dealing with the growing list of issues is hard. It may take a longer time to address the problems than to find them – not to mention to put them into releases and...

The picture was taken by mr Nasser and shared on social media In appendix A of the book Root cause: Stories and lessons from two decades of Backend Engineering Bugs, author Hussein Nasser has these wonderful words to say about me: Daniel Stenberg is a Swedish engineer and the creator of curl (cURL), one of the most...

You always find the new curl releases on the curl site! Release presentation At 10:00 CEST (08:00 UTC) I will do my transitional live-streamed video presentation of curl 8.20.0 on my twitch channel. Numbers the 274th release8 changes49 days (total: 10,761)282 bugfixes (total: 13,922)521 commits (total: 38,545)0 new...

As I have been preparing slides for my coming talk at foss-north on April 28, 2026 I figured I could take the opportunity and share a glimpse of the current reality here on my blog. The high quality chaos era, as I call it. No more AI slop I complained and I complained about the high frequency junk submissions to...

Software and digital security should rely on verification, rather than trust. I want to strongly encourage more users and consumers of software to verify curl. And ideally require that you could do at least this level of verification of other software components in your dependency chains. Attacks are omnipresent...

My email address is spelled out in the curl license The curl license appears in many products Some people have problems with their products and need someone to email A few of these discover my email in their product Occasionally, the person in need of help emails me about their product. I collect some of those and...

The NTLM authentication method was always a beast. It is a proprietary protocol designed by Microsoft which was reverse engineered a long time ago. That effort resulted in the online documentation that I based the curl implementation on back in 2003. I then also wrote the NTLM code for wget while at it. NTLM broke...