Apple I by Ciro Santilli 37 Updated +Created
Video 1.
Steve Jobs' Apple-1 sells for $945k
. Source.
Constraint satisfaction problem by Ciro Santilli 37 Updated +Created
Saint Eligius by Ciro Santilli 37 Updated +Created
Figure 1.
Saint Eligius by Petrus Christus
. Source. Eligius pool is named after Saint Eligius, patron of goldsmiths and miners[ref]
Magic: The Gathering is Turing complete by Ciro Santilli 37 Updated +Created
Video 1.
I Built a COMPUTER in Magic: The Gathering by Because Science (2019)
Source. Shows an explicit Turing complete Magic The Gathering setup with real cards in a standard "extremely lucky" 2 player game.
Exploration-exploitation dilemma by Ciro Santilli 37 Updated +Created
Dimensionality reduction by Ciro Santilli 37 Updated +Created
I can't believe I had missed that meme until now, and I couldn't resist the temptation to translate it
Video 1.
Xi Jinping saying those against raise their hands (2017)
Source.
Video 2.
Xi Jinping saying those against raise their hands (2022)
Source.
Video 3.
Those against raise their hands Xi Jinping remix
. Source. I also couldn't resist a Kdenlive exercise in voice sampling. It was remarkably easy to do, not bad.
Video 4.
Al Capone hits a homerun scene from the film The Untouchables
. Source.
Video 5.
Committee meeting scene from the film The Death of Stalin
. Source.
Updates / Understanding the state of 3x3 matrix multiplication by Ciro Santilli 37 Updated +Created
After yet another awesome announcement by DeepMind that it had improved theoretical 4x4 matrix multiplication reducing the number of scalar multiplications with its AlphaEvolve system, I decided to have a look at the smallest open size 3x3 to understand what was going on in there.
Updates / Two Linux Kernel Module Cheat videos by Ciro Santilli 37 Updated +Created
I made not one but two quick videos presentation videos about my project Linux Kernel Module Cheat, an emulation setup to study and develop the Linux kernel and more:
I had meant to do this editing for a while and kept pushing it off because editing hurts, but finally sat down did it, partly prompted by my quick recent updates made to the projects part of post OurBigBook job search round 2025. At first I was thinking of making a single video, but after I recorded the demo a bit it seemed like two separate ones would make more sense.
I also created a bug report for Kdenlive, the video editor that I used, for a freeze that happens if you try to shift + delete the last item of the timeline: bugs.kde.org/show_bug.cgi?id=504103. Kdenlive is a good editor, but unfortunately it has new freezes and crashes relatively often.
One more useless task that I get off my head, on to the next!
Video 2.
Linux Kernel Module Cheat demo
. Source.
CIA 2010 covert communication websites / HTML title element by Ciro Santilli 37 Updated +Created
The discoverty of a possible HTML information leaks on HTML <title> of webofcheer.com which is cryptically set as:
pg1c
motivated us to download all HTML and have a grep.
We started grepping with:
grep -ai '<title>' */index.html
and to just get the titles alone for visual inspection:
grep -ahi '<title>' */index.html | sed -r 's/^\s*<title>//;s/<\/title>.*//'
Some mildly interesting facts include:
  • opensourcenewstoday.com is titled just as "Title"
    opensourcenewstoday.com/index.html:<title>Title</title>
  • a few sites are titled "Untitled Document" e.g.:
    media-coverage-now.com/index.html:<title>Untitled Document</title>
    newsandsportscentral.com/index.html:  <title>Untitled Document</title>
    newsincirculation.com/index.html:<title>Untitled Document</title>
    newsworldsite.com/index.html:<title>Untitled Document</title>
    primetimemovies.net/index.html:<title>Untitled Document</title>
    unganadormundial.com/index.html:<title>Untitled Document</title>
    This may have been the default title in Adobe Dreamweaver.
  • some others have empty title:
    aeronet-news.com/index.html:<title></title>
    al-rashidrealestate.com/index.html:             <title></title>
    arabicnewsunfiltered.com/index.html:<title></title>
    dailynewsandsports.com/index.html:<title></title>
    electronictechreviews.com/index.html:<title></title>
    indirectfreekick.com/index.html:<title></title>
    iran-newslink-today.com/index.html:<title></title>
    iraniangoals.com/index.html:<title></title>
    kickitnews.com/index.html:<title></title>
    mediocampodefutbol.com/index.html:<title></title>
    middle-east-newstoday.com/index.html:      <title></title>
    mygadgettech.com/index.html:<title></title>
    sayaara-auto.com/index.html:<title></title>
    techwatchtoday.com/index.html:<title></title>
    the-open-book-online.com/index.html:<title></title>
    thenewsofpakistan.com/index.html:<title></title>
    theworld-news.net/index.html:<title></title>
    todaysengineering.com/index.html:<title></title>
    todaysnewsreports.net/index.html:<title></title>
    worldnewsandent.com/index.html:<title></title>
  • some others are titled just "index" or a variant of it:
    all-sport-headlines.com/index.html:<title>index</title>
    europeannewsflash.com/index.html:<title>Index</title>
    fgnl.net/index.html:<title>Index Page</title>
    iraniangoalkicks.com/index.html:<title>index</title>
    just-the-news.com/index.html:<title>index</title>
    mide-news.com/index.html:<title>index</title>
    mytravelopian.com/index.html:<title>Index</title>
    noticiasdelmundolatino.com/index.html:<title>index</title>
    pakcricketgrd.com/index.html:  <title>index</title>
    pangawana.com/index.html:<title>index</title>
    sportsnewsfinder.com/index.html:<title>index</title>
    thenewseditor.com/index.html:<title>index</title>
    turkishnewslinks.com/index.html:<title>index2</title>
    wahidfutbol.com/index.html:<title>index</title>
    webscooper.com/index.html:<title>index</title>
    webworldsports.com/index.html:<title>index</title>
  • a few don't have <title> at all:
    b2bworldglobal.com/index.html
    bailandstump.com/index.html
    businessexchangetoday.com/index.html
    commercialspacedesign.com/index.html
    court-masters.com/index.html
    flyingtimeline.com/index.html
    marketflows.net/index.html
    nouvellesetdesrapports.com/index.html
    senderosdemontana.com/index.html
    sixty2media.com/index.htm
It is impossible to tell if these were oversights, or intentional to simulate common web development quircks. But they are cute in any case.
CIA 2010 covert communication websites / Binary files by Ciro Santilli 37 Updated +Created
As per:
grep . */index.html | grep 'binary file matches'
a few of the HTMLs are interpreted by grep as being binary:
grep: china-destinations.org/index.html: binary file matches
grep: classicalmusicboxonline.com/index.html: binary file matches
grep: driversinternationalgolf.com/index.html: binary file matches
grep: familyhealthonline.net/index.html: binary file matches
grep: grubbersworldrugbynews.com/index.html: binary file matches
grep: hai-pow.com/index.html: binary file matches
grep: hi-tech-today.com/index.html: binary file matches
grep: networkofnews.com/index.html: binary file matches
grep: nigeriastar.net/index.html: binary file matches
grep: noticias-caracas.com/index.html: binary file matches
grep: theentertainbiz.com/index.html: binary file matches
grep: thefilmcentre.com/index.html: binary file matches
grep: theinternationalgoal.com/index.html: binary file matches
grep: wildbirds-seasia.com/index.html: binary file matches
grep: worldedgenews.com/index.html: binary file matches
martinezjavier/ldd3 by Ciro Santilli 37 Updated +Created
This repo has ported the kernels up to 5.10 as of writing. github.com/martinezjavier/ldd3/pull/86 attempts to go further into 6.x but has been ignored for two years unfortunately.
CIA 2010 covert communication websites / HTML analysis by Ciro Santilli 37 Updated +Created
The HTML from the index page of Wayback Machine were:
The best way to analyse the HTML is to grap our dumps from: github.com/cirosantilli/cia-2010-websites-dump.
Some possibly interesting searches include:
  • list all HTML comments, maybe something spicy was left over:
    git grep '<!--'
  • search for weird file extensions:
    git ls-files | grep -Ev '\.(jpg|gif|html|txt|png|css|php|js|jar|cgi|htm|swf|ico|JPG|class|zip|sf)'
  • have a look at the largest folers:
    ncdeu
Some of the HTML files contain conditional comments e.g. web.archive.org/web/20091023041107/http://aquaswimming.com/ contains:
<!--[if IE 6]> <link href="swimstyleie6.css" rel="stylesheet" type="text/css"> <![endif]-->
Varios of the non-English websites seem to have comments translating the content e.g.:
./noticiasmusica.net/20101230165001/index.html:<h2>Alguns dos Melhores Sites Nacionais</h2><!--some of the best national sites (in music)-->
This feels like it could be the translation helping the technical webdev team know what is what.
Many of the RSS frame pages use:
<base target="_blank" />
which is a weird HTML tag that would lead all links to open on new tabs, e.g. web.archive.org/web/20110202124411/http://thecricketfan.com/home.html.
Various websites have pages with .php extension. It feels likely that all websites were written in PHP.
Some URLs existed both in HTML and .php extension, or were converted at some point:
allworldstatistics.com/20110207151941/comprehensivesources.html
allworldstatistics.com/20130818155225/comprehensivesources.php
A few of the PHP urls have weird IDs in them like omktf, juqwt and qlaqft:
./middle-east-newstoday.com/20100829004127/omktf/uirl.php?ok=461128
./newsandsportscentral.com/20100327130237/juqwt/eubcek.php?pe=747155
./pondernews.net/20100826031745/lldwg/qlaqft.php?fc=281298
we wonder what they mean.
Linux Device Drivers book 3rd edition by Ciro Santilli 37 Updated +Created
lwn.net/Kernel/LDD3/ contains the PDF of each chapter.
The book covers the Linux kernel version 2.6.10.
Directorate of Operations (CIA) by Ciro Santilli 37 Updated +Created
Directorate of Digital Innovation (CIA) by Ciro Santilli 37 Updated +Created
Ciro Santilli believes that this recent directorate was likely created as a result of the massive failure of the CIA 2010 covert communication websites
This section is about possible real-world information leaks found in the HTML of the pages. Domain DNS metadata may of course expose more, and is more likely to do so, this section is only about in-page findings, notably in the HTML.
We haven found much so far, but the ones we have are curious.
The HTML <title> of webofcheer.com is cryptically set as:
pg1c
rather than a more natural title like "Web of cheer" as is the case for the other website. This feels like a forgotten placeholder for an internal page identifier, e.g. "page 1C" sounds plausible. At Section "HTML title element" we riefly inspected the <title> of every other hit with a wayback machine archive, and unfortunately none other seemed to have any such interesting title.
The 2010 archive of europeantravelcafe.com has a "plan your trip" link links to a different domain: secure-cert.net/~etc/transport.html. This appears to have been a link to the system used by CIA operators to manage the website. Furthermore, the link then was later removed from the 2011 version, so it was almost certainly a leak! "secure-cert.net" is obscure, the only other surviving online mention of it is www.leewillis.co.uk/wordpress-plugins/#comment-6513 to
secure-cert.net/~sayitint/products-page/bags-totes/duffel-bag/ We've grepped all the HTML downloaded as HTML analysis but no other links to it were found.
Figure 1.
2010 Wayback Machine archive of www.europeantravelcafe.com with "plan your trip" highlighted by us
. Source.
Starting December 2004 the "Submit your favorid carlson quote" was mind blowingly switched to point to https://washington.serversecured.net/~alljohnn/cgi-bin/memlog.cgi thus likely leaking the control site URL. Beauty. It previously pointed to the more sensible: web.archive.org/web/20040901162621/https://secure.alljohnny.com/cgi-bin/memlog.cgi
A similar thing happened to alljohnny.com
A few separate websites have an archive with the same pid parameter:
fightwithoutrules.com/20131220205811/?pid=2POQ7BC1G/index.html
half-court.net/20131223165013/?pid=2POQ7BC1G/index.html
health-men-today.com/20131223002237/?pid=2POQ7BC1G/index.html
intlnewsdaily.com/20131221121441/?pid=2POQ7BC1G/index.html
intoworldnews.com/20131217193621/?pid=2POQ7BC1G/index.html
It is unclear what it means. All of them contain something like:
<html>
<head>
<meta name="robots" content="noarchive" />
<meta name="googlebot" content="nosnippet" />
</head>
<body>
<div align=center>
<h3>Error. Page cannot be displayed. Please contact your service provider for more details.  (11)</h3>
</div>
</body>
</html>
so looks like an archival artifact only.
The following two websites have a feeds.php system for their RSS:
./mydailynewsreport.com/20110211111053/myrss/feeds.php?src=http:/www.refahemelli.com/pashto/news/rss.php&chan=y&desc=1&targ=y&utf=y
./magneticfieldnews.com/20110208063545/magneticfeeds/feeds.php?src=http:/www.bbc.co.uk/pashto/index.xml&chan=y&desc=1&targ=y&utf=y

There are unlisted articles, also show them or only show them.