All Postings (91)

2017

Subversive? Physics?

My Philosophy!

Scripts Beget Scripts

2016

Theoretical Physics. A Hobby.

Self-Referential Poetry

Silent Online Writing

'Are You Still Doing PKI?'

My Philosophy (?)

Impact of physics on my life

Not much happened in 2015

2015

Unspeakable

Self-Poetry

Farewell Posting ...

Hacking away...

Web Project - Status

We Interrupt ...

Poetry from Poetry

PKI-Status-Update

Life and Work

Definition: 'Subversive'

2014 in Books

Physics Postings

Engineering Postings

True Expert

2014

2014 - a Good Year

Physics or Engineering?

Engineering Links

What Is Art?

Bio

PKI FAQ

Google's Poetic Talents

Certificates and Heat Pumps

Nr. 5: A Mind-Altering Experience

Technet postings

WOP!

Pink Spaceship

radices = Roots!

IT Postings

Web Projects

Life, the Universe, and Everything

Uh-oh, No Posting in March

PKI Resources

PKI Issues

Subversive Work

Spam Poetry

A Career 'in Science'

Writing

On the Shoulders of Subversive Giants

Search Term Poetry

Facebook Art

2013 in Books

2013

Explain, Evaluate, Utilize

Technology

About Life-Form Elke Stangl

elkement and This Site

No. 3: Internet Apocalypso

Retrospection

Newsletter Resurrection

2012

For Free

Subversive Yearly Report

Is My Life a Cliché?

Indulging in Cliché

Torture Turning Trivia

Intermittent Netizen

Knowledge Worker...

Profile

Physics on the Fringe

Graduation Speech

The Element is Back!

Offline

Physics Links

2011

Not Funny

Calendar and Magic

Expert

In Need of a Deflector

About to Change

A Nerd's Awakening

For the Sake of Knowledge

2008

Profession Or True Calling?

No. 2: On Self-Reference

I Have No Clue About Art

Netizen

2007

The End

No. 1: On Subversion at Large

2005

Emergency Exit

Modern Networker

2004

The Scary Part

Exploring the Work Space

2003

Instead of a CV

Favorite Books

2002

Elke was here

My Articles on IT Security, Monitoring, PKI.

(elkement. Last changed: 2015-11-07. Created: 2014-06-01. Tags: Postings, Blogging, Resources, Links, IT, Monitoring, PKI, Security, X.509, Cryptography. German Version.)

My lecture slides on PKI and security are a bit dated already, I add them for completeness though.

Articles on my blog are targeted to a broader audience - perhaps they are too 'philosophical' for security experts. See the complete list of postings below, after the image.

X.509 Certificate

Other People Have Lives – I Have Domains (2017-06-06 22:17:47)
These are just some boring update notifications from the elkemental Webiverse. The elkement blog has recently celebrated its fifth anniversary, and the punktwissen blog will turn five in December. Time to celebrate this – with new domain names that says …

Earth, Air, Water, and Ice. (2017-02-05 11:48:33)
In my attempts at Ice Storage Heat Source popularization I have been facing one big challenge: How can you – succinctly, using pictures – answer questions like: How much energy does the collector harvest? or What’s the contribution of ground? …

My Data Kraken – a Shapeshifter (2016-12-22 10:53:56)
I wonder if Data Kraken is only used by German speakers who translate our hackneyed Datenkrake – is it a word like eigenvector? Anyway, I need this animal metaphor, despite this post is not about facebook or Google. It’s about …

Give the ‘Thing’ a Subnet of Its Own! (2016-11-20 11:44:44)
To my surprise, the most clicked post ever on this blog is this: Network Sniffing for Everyone: Getting to Know Your Things (As in Internet of Things) … a step-by-step guide to sniff the network traffic of your ‘things’ contacting …

Internet of Things. Yet Another Gloomy Post. (2016-09-30 21:18:41)
Technically, I work with Things, as in the Internet of Things. As outlined in Everything as a Service many formerly ‘dumb’ products – such as heating systems – become part of service offerings. A vital component of the new services …

Hacking My Heat Pump – Part 2: Logging Energy Values (2016-08-24 09:52:12)
In the last post, I showed how to use Raspberry Pi as CAN bus logger – using a test bus connected to control unit UVR1611. Now I have connected it to my heat pump’s bus. Credits for software and instructions: …

Hacking My Heat Pump – Part 1: CAN Bus Testing with UVR1611 (2016-08-03 10:04:39)
In the old times, measuring data manually sometimes meant braving the elements: Now, nearly all measurements are automated: In order to calculate the seasonal performance factor of the heat pump system we have still used the ‘official’ energy reading provided …

Have I Seen the End of E-Mail? (2016-06-10 09:46:03)
Not that I desire it, but my recent encounters of ransomware make me wonder. Some people in say, accounting or HR departments are forced to use e-mail with utmost paranoia. Hackers send alarmingly professional e-mails that look like invoices, job …

Photovoltaic Generator and Heat Pump: Daily Power Generation and Consumption (2016-06-01 12:21:02)
You can generate electrical power at home but you cannot manufacture your own natural gas, oil, or wood. (I exempt the minority of people owning forestry). This is often an argument for the combination of heat pump and photovoltaic generator. …

Everything as a Service (2016-05-19 13:57:08)
Three years ago I found a research paper that proposed a combination of distributed computing and heating as a service: A cloud provider company like Google or Amazon would install computers in users’ homes – as black-boxes providing heat to …

Alien Energy (2016-04-15 17:03:12)
I am sure it protects us not only from lightning but also from alien attacks and EMP guns … So I wrote about our lightning protection, installed together with our photovoltaic generator. Now our PV generator is operational for 11 …

Anniversary 4 (4 Me): “Life Ends Despite Increasing Energy” (2016-03-18 18:05:32)
I published my first post on this blog on March 24, 2012. Back then its title and tagline were: Theory and Practice of Trying to Combine Just Anything Physics versus engineering off-the-wall geek humor versus existential questions IT versus the …

Half a Year of Solar Power and Smart Metering (2015-12-07 11:11:53)
Our PV generator and new metering setup is now operational for half a year; this is my next wall of figures. For the first time I am combining data from all our loggers (PV inverter, smart meter for consumption, and …

The Impact of Ambient Temperature on the Output Power of Solar Panels (2015-11-13 09:21:38)
I have noticed the impact of traversing clouds on solar power output: Immediately after a cloud has passed, power surges to a record value. This can be attributed to the focusing effect of the surrounding clouds and/or cooling of the …

Shortest Post Ever (2015-11-07 18:17:44)
… self-indulgent though, but just to add an update on the previous post. My new personal website is  live: elkement.subversiv.at I have already redirected the root URLs of the precursor sites radices.net, subversiv.at and e-stangl.at. Now I am waiting for …

Random Things I Have Learned from My Web Development Project (2015-10-29 15:06:33)
It’s nearly done (previous episode here). I have copied all the content from my personal websites, painstakingly disentangling snippets of different ‘posts’ that were physically contained in the same ‘web page’, re-assigning existing images to them, adding tags, consolidating information …

My Flat-File Database (2015-09-18 10:35:10)
A brief update on my web programming project. I have preferred to create online text by editing simple text files; so I only need a text editor and an FTP client as management tool. My ‘old’ personal and business web …

Interrupting Regularly Scheduled Programming … (2015-08-17 19:09:41)
(… for programming.) Playing with websites has been a hobby of mine since nearly two decades. What has intrigued me was the combination of different tasks, appealing to different moods – or modes: Designing the user interface and organizing content. …

Solar Power: Some Data for the First Month. (2015-06-17 12:04:07)
On May 4, 2015, we started up our photovoltaic generator. Here are some numbers and plots for the first month – and what I plan to do next. Our generator has a rated power of 4,77 kWp (kilowatt peak), one …

Watching TV Is Dangerous (2015-05-07 20:33:41)
I am not talking about humans. But TV-sets might threaten other devices in the smart home; this was a recent puzzle submitted by a blog reader. Two unrelated devices / services met on the user’s local computer network: IP-TV provided …

Finally Mobile-Friendly! (How I Made Googlebot Happy) (2015-04-29 17:27:30)
Not this blog of course – it had been responsive already. But I gave in to Google’s nagging and did not ignore messages in Google Webmaster Tools any longer. All my home-grown websites had a fixed width of the content …

Data Logging with UVR1611 – FAQ (2015-03-18 15:10:40)
I have received several questions related to my article on data logging on this blog, or to my postings on monitoring and control on our German blog. Thus I have decided to write the article I would have wanted to read …

All My Theories Have Been Wrong. Fortunately! (2015-01-23 10:16:09)
I apologize to Google. They still like my blog. This blog’s numbers plummeted as per Webmaster Tools, here and here you find everything you never wanted to know about it. I finally figured that my blog was a victim of …

Looking for Patterns (2015-01-09 15:31:02)
Scott Adams, of Dilbert Fame, has a lot of useful advice in his autobiographical book How to Fail at Almost Everything and Still Win Big. He recommends looking for patterns in your life, without attempting to theorize about cause and …

Waging a Battle against Sinister Algorithms (2014-12-20 20:50:54)
I have felt a disturbance of the force. As you might expect from a blog about anything, this one has a weird collection of unrelated top pages and posts. My WordPress Blog Stats tell me I am obviously an internet …

Google and Heating Systems (2) (2014-11-15 16:24:46)
I googled our company name. Then I found this: Auftrag means order and the obfuscated parts contain our full company name, the Chief Engineer’s name, the URL of a vendor we ordered material from recently, invoice total, and a comment …

When I Did Social Engineering without Recognizing It (2014-08-05 11:32:33)
I planned to read something about history this summer. Then I picked the history of hacking. My favorite was Kevin Mitnick’s autobiography – the very definition of a page-turner. The book is free of hardcore technical jargon and written for …

5 Years Anniversary: When My Phone Got Hacked (2014-07-18 11:32:04)
I like to play with phones. 5 years ago my cell phone decided it wanted to play on its own. It did participate in a TV voting – so the provider said and the itemized bill proved. This was for …

What Learning about Feynman’s Path Integrals Was Good for (2014-07-03 14:08:07)
I have gone to great lengths on this blog in order to explain how and why a degree in physics prepares you for seemingly different careers, or at least does not hurt. But it would have been so simple. I …

Network Sniffing for Everyone – Getting to Know Your Things (As in Internet of Things) (2014-06-05 15:45:13)
Simple Sniffing without Hubs or Port Mirroring for the Curious Windows User [Jump to instructions and skip intro] Your science-fiction-style new refrigerator might go online to download the latest offers or order more pizza after checking your calendar and noticing …

Diffusion of iTechnology in Corporations (or: Certificates for iPhones) (2014-05-11 13:00:58)
[Jump to technical stuff] Some clichés are true. One I found confirmed often is about how technologies are adopted within organizations: One manager meets another manager at a conference / business meeting / CIO event. Manager X show off the …

The Strange World of Public Key Infrastructure and Certificates (2014-03-12 10:47:21)
An e-mail discussion related to my recent post on IT security has motivated me to ponder about issues with Public Key Infrastructure once more. So I attempt – most likely in vain – to merge a pop-sci introduction to certificates …

What I Never Wanted to Know about Security but Found Extremely Entertaining to Read (2014-02-13 00:03:01)
This is in praise of Peter Gutmann‘s book draft Engineering Security, and the title is inspired by his talk Everything You Never Wanted to Know about PKI but were Forced to Find Out. Chances are high that any non-geek reader is already …

Cyber Security Satire? (2013-05-19 13:59:49)
I am a science fiction fan. In particular, I am a fan of movies featuring Those Lonesome Nerds who are capable of controlling this planet’s critical infrastructure – from their gloomy basements. But is it science fiction? In the year …

My Google Searches Might Heat Your Home (2013-02-18 19:22:36)
Sorry, but this is not about Search Term Poetry! Rather the contrary: Imagine your search terms could be utilized for something down-to-earth, for something useful. Google states: See more comparisons for Google services here! (Though I am disappointed they did …

Trading in IT Security for Heat Pumps? Seriously? (2013-01-22 18:45:21)
Astute analysts of science, technology and the world at large noticed that my resume reads like a character from The Big Bang Theory. After all, an important tag used with this blog is cliché, and I am dead serious about theory and …

Personal website of Elke Stangl, Zagersdorf, Austria, c/o punktwissen.
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