EE-Training

Knowledge makes you Curious

You are here: Home » Blog

Sorry, we were hacked

by

This website runs WordPress with a theme based on Genesis. Unfortunately, we were hacked on May 27, 2024. If that ever happens to you, do what you have to do. In our case, we found the file functions.php in the genesis theme to be modified. The file is supposed to be fairly empty, but it had a lot of odd stuff in it starting with:

<?PHP

/* custom filters */

I hope this never happens to you. Sorry if it caused any problems.

What was the purpose of the hack? Well, it very much looked like an attempt by some hacker purportedly from Russia using this website as part of a link-building bot-net. My guess is it works like this: Someone (in this case actually from Denmark, because all the fake “casino” links were in Danish) buys 10K inbound links on the black market. They put 1000s of variations of the links out on 1000s of websites through this bot-net. In this case, we were hacked to be part of the bot-net.

Takeaway: Never buy incoming links. Even if it seems to work. Even a SEO expert I paid to work for me advised us to do it. Just say no.

The ultimate memory interface training course now live in person Copenhagen & Munich Feb 2024

by

*UPDATED* The best memory interface training course is now back LIVE again. We are running two courses face-to-face like back in the pre-COVID days 🙂 One in Copenhagen and one in Munich. Both arranged with R&S to be able to support the training with live demos using state-of-the-art equipment. Copenhagen, DK, Deb 19-21, 2024 Munich,… Read more

Crosstalk video demonstration for stripline

by

A short video to demonstrate crosstalk and try to explain how that works in the stripline environment. We look at both the near-end and far-end crosstalk and also explain why that depends on the termination used. Direct YouTube link. In a real digital circuit, we will have one of these termination situations: Open/high impedance (typical… Read more

University SI Course – COVID’19 Version

by

Challenged in all ways, we didn’t run the university SI course at DUT in the summer of 2020 like in previous years. Sad, but true. Then something amazing happened. Students started pressing for the course to run somehow. Happy to say we just completed a 14-week, COVID-19 version of the course. Some face-2-face, some over… Read more

Video: Using a Network Analyzer as a TDR

by

See how you can do fast TDR measurements using a network analyzer or VNA in this video. Whenever you are designing boards with specific characteristic impedances, you will want to be able to verify that on your fabricated boards. It’s recommended to put in test traces on each layer, but how do you measure this.… Read more

Video: PDN Measurement with a Network Analyzer

by

See how easily you can do a PDN measurement using a network analyzer or VNA in the video here. Building solid power distribution systems (PDN’s) is maybe the most important learning from the signal integrity training overall. Because it matters. Both for the logic functions, the signal quality (integrity) and for the radiated emissions (EMI).… Read more

Schmartboard breakout prototyping PCB

by

The hunt for the perfect prototyping breakout boards ended at “Schmartboard” this time. At my first job, we had something we called “mini-mount” in the lab. Lots of them. And we used it to build all kinds of prototypes. Basically, it was a footprint for some SMT part on a thin single layer PCB with… Read more