Frank DENIS random thoughts.

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Blog Posts

16 Jun 2025 » LLMs don't need your secret tokens (but MCP servers hand them over anyway)
06 Jun 2025 » Apps shouldn’t let users enter OpenSSL cipher-suite strings
04 Jun 2025 » Building a smarter chatbot - Why you need FAQ-links + RAG (and why everyone else gets it wrong)
27 Mar 2025 » How to enable post-quantum key exchange and AEGIS in Nginx
27 Feb 2025 » A simple tweak to make static shared keys suck less
11 Feb 2025 » Options for full disk encryption on Linux
27 Jan 2025 » Why your pull request might not be merged
07 May 2024 » A comprehensive introduction to CDNs
11 Dec 2023 » The best WebAssembly runtime may be no runtime at all
26 Sep 2023 » LLVM performance improvements for WebAssembly
04 Jan 2023 » Performance of WebAssembly runtimes in 2023
26 Mar 2021 » It doesn't work
22 Feb 2021 » Benchmark of WebAssembly runtimes - 2021 Q1
03 Nov 2019 » Stop using ridiculously low DNS TTLs
28 Oct 2019 » Go is the new Ruby
22 Oct 2019 » Updated WebAssembly benchmark using libsodium
29 May 2019 » CI is awesome. CD makes me uncomfortable.
04 May 2019 » DNSCrypt - how expired certificates became a thing of the past
09 Apr 2019 » Benchmarking WebAssembly using libsodium
07 Apr 2019 » Compiling C to WebAssembly using clang/LLVM and WASI.
25 Nov 2018 » WebAssembly doesn’t make unsafe languages safe (yet)
18 Oct 2018 » On user authentication
05 Apr 2018 » Building a parental control system from scratch
07 Mar 2017 » How I changed my body shape in 7 months
17 Feb 2016 » CVE-2015-7547: don't panic, don't spread fear
20 Jul 2015 » IPv6, DNS and Windows
01 Jun 2015 » Where are the self-tuning systems?
28 Mar 2014 » When suspended accounts are actually targeted attacks [updated]
06 Nov 2013 » Taking down botnets is not ineffective
05 Nov 2013 » Getting prepared for the next Cryptolocker DGA
07 Aug 2013 » Security and privacy issues of edns-client-subnet
09 May 2013 » Learn from marketing/sales people.
26 Jun 2012 » On dnscache poisoning and how SipHash can help
02 Jun 2012 » mod_pagespeed as a proxy for your phone
10 May 2012 » On the distribution of DNS TTLs
22 Feb 2012 » Akamai vs public DNS servers
17 Nov 2011 » DNS records and TTL - how long does a second actually last?
14 Aug 2011 » Programmatically changing network configuration on OSX
10 Mar 2011 » Redis as a recommendation engine
25 Feb 2011 » Pagination and HTTP caching
19 Jan 2011 » Thoughts on PHP sessions
19 Oct 2010 » Back and forward buttons considered harmful
11 Oct 2010 » What happens during the AppStore review process?
07 Oct 2010 » Using Pincaster for autocompletion
22 Sep 2010 » A transparent, client-side fragment cache.
19 Sep 2010 » Goodbye Mephisto, Hello Jekyll
02 Sep 2010 » How the way you deploy code can ruin performance
15 May 2010 » Choosing a NoSQL data store according to your data set.
29 Dec 2009 » Twonav for iPhone is now available
12 Sep 2009 » Application-controlled browser cache using local storage.
12 Sep 2009 » Is Twitter a blog killer?
29 Jun 2009 » Enter webhooks
25 Jun 2009 » Elliptics Network 2.5.0 has been released
24 Jun 2009 » PHP-FPM might get merged into PHP
13 Jun 2009 » Stealing your browser history without Javascript
10 Jun 2009 » Bayon, a fast clustering tool
06 Jun 2009 » Yet some more good presentations
30 May 2009 » Embracing events
29 May 2009 » ICANN to open up the TLD namespace
29 May 2009 » A sneak peek at the Google IO conference
27 May 2009 » UCARP 1.5.1
26 May 2009 » Hardening MacOSX against the Java vulnerability
21 May 2009 » New benchmarks of Elliptics Network published
16 May 2009 » Slides and videos from MWRC2009
16 May 2009 » Pinba: a real-time statistics server for PHP
12 May 2009 » A critical vulnerability in IE8
06 May 2009 » MurmurHash: now in 64-bits flavor
28 Apr 2009 » Pure-FTPd 1.0.22 has been released
28 Apr 2009 » Beyond horizontal scalability
28 Apr 2009 » A critical one-shot remote Linux kernel vulnerability
25 Apr 2009 » Ubuntu Jaunty: made on MacOSX with Photoshop
25 Apr 2009 » Online file converter that really rocks
24 Apr 2009 » Running a Realtime Stats Service on MySQL
23 Apr 2009 » A presentation about Q4M
18 Apr 2009 » Natural Docs: yet another documentation generator
18 Apr 2009 » MapReduce vs DBMS for large-scale data analysis
18 Apr 2009 » Cloudkit, Hypertable, HyperRecord
13 Apr 2009 » Ruby on Google App Engine
09 Apr 2009 » An overview of modern SQL-free databases
09 Apr 2009 » 10 Reasons why PHP is Still Better than Ruby
06 Apr 2009 » Messages queues evaluated for Second Life
28 Mar 2009 » MacRuby, soon based upon the LLVM infrastructure
27 Mar 2009 » An introduction to RestMS
20 Mar 2009 » A complete search engine in 200 lines
19 Feb 2009 » A killer template system in pure Javascript
13 Feb 2009 » Security assessment of the TCP protocol
31 Jan 2009 » Ruby 1.9.1 is released
26 Jan 2009 » An introduction to Tokyo products
17 Jan 2009 » High Availability of Web Server Using UCarp
13 Jan 2009 » QuickPwn annoyed by iTunes
30 Dec 2008 » CloudKit: RESTful versioned storage of JSON data
15 Dec 2008 » Signals and slots in Javascript
14 Dec 2008 » Scientists extract images directly from brain
14 Dec 2008 » PHP-FPM 0.5.10 has been released
14 Dec 2008 » A MySQL UDF for top N sort
11 Dec 2008 » Google's browser security handbook
09 Dec 2008 » 0MQ 0.4 has been released, now under LGPL
08 Dec 2008 » Running native code on the web
08 Dec 2008 » PHP 5.2.8 is out
08 Dec 2008 » New version of Ruby Enterprise Edition released
08 Dec 2008 » Fix iTerm crash in multi-user mode
08 Dec 2008 » Easily download the files of a web site
08 Dec 2008 » Bypassing face-recognition systems
08 Dec 2008 » An iPhone temperature app using... crickets as sensors
08 Dec 2008 » A YARV to LLVM compiler
07 Dec 2008 » Need an emergency DNS cache?
07 Dec 2008 » Don't upgrade to PHP 5.2.7 now
27 Nov 2008 » Speed up page loading on your iPhone
22 Nov 2008 » OpenBSD-current is slow!
20 Nov 2008 » How to flush the resolver cache on OSX
18 Nov 2008 » Recent security flaws you might care about
12 Nov 2008 » Yet another fast CSS3 selector implementation
06 Nov 2008 » What's the fastest in-memory associative arrays library?
06 Nov 2008 » Big life secret: how I manage my money
05 Nov 2008 » Source Wars, an overview of OpenBSD 4.4 by its coders
04 Nov 2008 » A zero-knowledge password authentication method
02 Nov 2008 » Yes, 6 x 9 = 42
02 Nov 2008 » GEMA is now open source
29 Oct 2008 » Online version of OpenOffice.org 3
28 Oct 2008 » C++ backend for haXe and AS3->haXe converter
27 Oct 2008 » Don't forget that clickjacking is still with us
26 Oct 2008 » Ruby off Rails
26 Oct 2008 » Optimize your Firefox SQLite databases
26 Oct 2008 » Matthew Dillon's NYCBSDCon 2008 slides
23 Oct 2008 » A messy list of worthy software, part #1
18 Oct 2008 » How to avoid IE CSS hacks using conditional classnames
18 Oct 2008 » An unofficial Prototype and Scriptaculous Wiki
08 Oct 2008 » A lookup at Google's data centers
07 Oct 2008 » Closing the users browser connection whilst keeping your php script running
29 Sep 2008 » Prototype 1.6.0.3 has been released
27 Sep 2008 » Using libpuzzle in order to find the cue point of a video
27 Sep 2008 » Extensions for the prototype.js library
26 Sep 2008 » Multiple vendor ftpd - Cross-site request forgery
24 Sep 2008 » Lesser-known PHP vulnerabilities
21 Sep 2008 » The IP address assignments map
19 Sep 2008 » Pacman in Javascript
11 Sep 2008 » Nostalgia
08 Sep 2008 » A Ruby VM in Javascript
05 Sep 2008 » Hans Reiser history, by DittoBox
05 Sep 2008 » First Google Chrome vulnerability disclosed
01 Sep 2008 » OSBF-Lua is still the best spam filter in the world
31 Aug 2008 » A DragonflyBSD live DVD
30 Aug 2008 » An actual solution to the current weakness of the DNS protocol
08 Aug 2008 » DNS servers still vulnerable after patching
06 Aug 2008 » Solaris remote root exploit
21 Jul 2008 » Details for Kaminsky DNS vulnerability leaked
09 Jul 2008 » Another OpenSSH-portable vulnerability?
06 Jul 2008 » A simple, powerful and fast mail delivery agent
26 Jun 2008 » Linux is dying
26 Jun 2008 » BSD is dying
24 Jun 2008 » Cross-subdomain AJAX made simple
22 Jun 2008 » A presentation of the HAMMER filesystem
07 Jun 2008 » RAID0 vs RAID1 benchmark
23 May 2008 » Persistent storage without cookies
21 May 2008 » Avoid pie charts
21 May 2008 » Let extensions run with new Firefox versions
15 May 2008 » A library for lockless and transaction-capable hash tables
12 May 2008 » XMLHttpRequest browser bugs and and implementation with sniffing capabilities
07 May 2008 » Opera doesn't load some sites
08 Feb 2008 » Fast sinus and cosinus approximation
02 Feb 2008 » MySQL gets Maria, yet another storage engine
01 Feb 2008 » Microsoft to buy Yahoo
30 Jan 2008 » Thin: a fast and simple Ruby web server
30 Jan 2008 » MonetDB / X100, a revolution in the database world
21 Jan 2008 » UCARP 1.4 has been released
21 Jan 2008 » Tokyo Tyrant : a network layer for Tokyo Cabinet
19 Dec 2007 » Next Internet Explorer to pass the Acid 2 test ?
16 Dec 2007 » Easily embed PHP within C++
08 Dec 2007 » Ruby on Rails 2 is out!
04 Dec 2007 » Bob Jenkins super fast hash for PHP
02 Dec 2007 » VMWare Server 2 beta is now available
28 Nov 2007 » Highly scalable architectures : lessons learned at Qcon 2007
27 Nov 2007 » Optimizing require_once with xend
27 Nov 2007 » Java 6 has been ported to MacOS X
21 Nov 2007 » Improving MyISAM read/write concurrency
20 Nov 2007 » PHP 5.2.5 + Suhosin + FastCGI = unstable trio
15 Nov 2007 » Tokyo Cabinet, Mikio did it again
09 Nov 2007 » JumboMem: expand your memory at will
03 Nov 2007 » Update your DNS cache servers
02 Nov 2007 » Internet Explorer memory leaks
30 Oct 2007 » Rest in peace, Jun-Ichiro Hagino Itojun
27 Oct 2007 » Stop 1970 programming
20 Oct 2007 » A nice alternative to osCommerce
14 Oct 2007 » Optimizing MyISAM tables with a pair of disks
14 Oct 2007 » A wonderful project-management tool
12 Oct 2007 » Off-by-one in OpenSSL
06 Oct 2007 » OpenBSD 4.2 song and lyrics are online
03 Oct 2007 » Hot news in the Ruby on Rails world
29 Sep 2007 » Swiftiply: boost your framework-driven web applications
26 Sep 2007 » Pixelmator 1.0 is available
24 Sep 2007 » Vulncheck updated
19 Sep 2007 » New project: the puzzle library
18 Sep 2007 » PHP : notes about integers
15 Sep 2007 » ChironFS, filesystem redundancy made simple
08 Aug 2007 » Pure Javaâ¢, Pure Evilâ¢ Popups
06 Aug 2007 » Why PHP is a mess
07 Jul 2007 » UCARP 1.3 is out
07 Jul 2007 » Playing with Ruby 1.8, Ruby 1.9 and PHP
07 Jul 2007 » OpenBSD is now running on Xbox
08 Jun 2007 » Emacs 22 is out!
05 Jun 2007 » OpenOffice.Org for OSX
05 Jun 2007 » EyeOS 1.0 has been released
04 Jun 2007 » An age is not a duration
25 May 2007 » New TLB shootdown code in OpenBSD
11 May 2007 » Gentoo 2007.0 is there!
10 May 2007 » MaxKeepAliveRequests: keep it high
08 May 2007 » Cunninlynguists: f*cking good sh*t
04 May 2007 » PHP 5.2.2 has been released
03 May 2007 » STF scheduler for OpenBSD
29 Apr 2007 » Easily create config files for Nginx from YAML files
26 Apr 2007 » Google releases patches that enhance the manageability and reliability of MySQL
25 Apr 2007 » Excel as an exchange format is a nightmare for developpers
23 Apr 2007 » Enable IPv6 and kill the internet
22 Apr 2007 » OpenBSD is being ported to the Xbox
18 Apr 2007 » PHP and its horrible hash/array mixup
18 Apr 2007 » Mozilla Thunderbird 2 is there!
18 Apr 2007 » lighttpd 1.4.15 has been released
17 Apr 2007 » OpenBSD finally got UFS2
16 Apr 2007 » Myths of XHTML and why HTML is probably the way to go
15 Apr 2007 » OpenBSD 4.1 song and lyrics now available
15 Apr 2007 » Submitting a form without changing the window's content
14 Apr 2007 » Internet Explorer and multiple connections to same the web server
10 Apr 2007 » Backslashes in SQL strings are illegal
07 Apr 2007 » PHP WebDAV extension 1.1 released
05 Apr 2007 » YouGetIt : the next big thing?
05 Apr 2007 » Rage against free Broadcom drivers
04 Apr 2007 » Moderating bulletin boards with text classifiers
02 Apr 2007 » Timing a process out
31 Mar 2007 » Preventing cross-domains scripting attacks
31 Mar 2007 » No more 2D acceleration for free operating systems?
31 Mar 2007 » MySQL 5.0.37 for OpenBSD
31 Mar 2007 » 800x600 is not dead
30 Mar 2007 » LSI Megaraid cards and slow write performance
30 Mar 2007 » Sniffing Bluetooth with common hardware
28 Mar 2007 » PHP with FastCGI on OpenBSD
26 Mar 2007 » Skyrock Blog launched
26 Mar 2007 » MySQL proxy and MySQL tricks
26 Mar 2007 » Metasploit 3.0 has been released
23 Mar 2007 » Gettext and accents in po templates
22 Mar 2007 » Translating HTML templates
18 Mar 2007 » DSPAM 3.8.0 unofficial release
17 Mar 2007 » Patch for the OpenBSD mbuf issue has been updated
16 Mar 2007 » Insono: linear auditive protections
14 Mar 2007 » A security hole in the OpenBSD IPv6 stack
12 Mar 2007 » OpenBSD 4.1 is available for preorders
12 Mar 2007 » MySQL and persistent user variables
08 Mar 2007 » OS counters are harmful
08 Mar 2007 » A fast web browser for OSX
07 Mar 2007 » Why are lightweight markup languages so heavy?
05 Mar 2007 » PHP and multipart PUT data
05 Mar 2007 » Announcing the PHP WebDAV extension
04 Mar 2007 » phpinfo() XSS vulnerability
04 Mar 2007 » 00F.Net is back