For a local network supporting a small company or an Internet-active family, it is always possible to rely totally on an Internet Service Provider (ISP) which will provide basic network services straight from the Internet box/router (fibre or ADSL). But, if – like me – you want to have more flexibility, you’d prefer to setup…
After a more thorough analysis, I believe that I have now a clear image of what happened to . It appears that a hacker introduced itself into our web site through an insecure WordPress plugin. The security defect has been corrected relatively quickly, but it left a wide open gap during a few days. The…
This appears to be one of the most imprecise errors a web server can through at you. More or less, it means “I tried but I can’t serve and I can’t help with more precise information”. People and forums tend to say that this may be related to database issues or .htaccess issues. But not…
So, it had to happen one day. has been hacked. Nothing very terrible, but a few bad hours for an administrator. The site to be rebuilt in a matter of hours. Passwords to be changed. Several hours lost for nothing. There wasn’t much to steal (the users are not very many). But it is impossible…
Designed to help in a computer science and algorithms teaching course, these are great ideas of algorithm descriptions using only simplified drawings and no word (styled like Ikea assembly instructions). I love them. Idea-instructions.
It seems that I can help some readers with a library of information about GDPR, the new (in May 2018) European Regulation about Privacy and the handling Personal Data on web sites. It may appear as quite complex. So, I collected a list of those articles I found most interesting for a first reading/introduction (aimed at…
I have several web sites wirtten with WordPress and I needed to comply with the new GDPR European regulation (new in May 2018). After a few hours of work to find how to do this right… I decided to share my experience and show the steps I went through; not very difficult, but rather lenghty,…
Our computers have more and more USB ports, and we have so many storage drives plugged into them (USB drives, USB thumb drives, memory card readers, etc.) that it is somewhat difficult to recognize them all when they are displayed on the desktop. In the example below, you wonder which one is which among all…
A few years ago I had written about Guillermo Luijk’s technique to remove completely noise from digital photos. We know that this is a difficult task, but his solution is relatively simple: Shot the scene in a correct exposure according to our usual workflow; Repeat the shot now reducing shutter speed by 4 f-stops that…