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John Opdenakker

@j-opdenakker.bsky.social
1.2K followers 110 following 394 posts

Blogger | #Infosec | #AppSec | Security awareness | Occasional Public Speaker | Cycling | Running | Posts might contain bad humor, sarcasm or irony | Takes your security seriously! johnopdenakker.com

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John Opdenakker @j-opdenakker.bsky.social · 27/06/2026
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John Opdenakker @j-opdenakker.bsky.social · 03/01/2026
Sad sad world we live in.
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John Opdenakker @j-opdenakker.bsky.social · 28/12/2025
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John Opdenakker @j-opdenakker.bsky.social · 15/11/2025
Let’s try this medium again. Who are the interesting and active posters on here?
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John Opdenakker @j-opdenakker.bsky.social · 25/10/2025
Just started reading this one.
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John Opdenakker @j-opdenakker.bsky.social · 12/10/2025
Someone asked me for a donation for their new swimming pool. so I gave them a glass of water.
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John Opdenakker @j-opdenakker.bsky.social · 21/09/2025
Despite my poor AI prompting skills, this image looks quite as evil as the Shai-hulud npm attack, right?
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Reposted by John Opdenakker
nixCraft @cyberciti.biz · 14/08/2025
ACME Protocol automates the issuance and renewal of SSL/TLS certificates, making web security management more efficient. Let's Encrypt uses the ACME. Now, nginx web server introduces native support for ACME protocol. No, need to download 3rd party script or certbot blog.nginx.org/blog/native-...
blog.nginx.org
NGINX Introduces Native Support for ACME Protocol  – NGINX Community Blog
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John Opdenakker @j-opdenakker.bsky.social · 29/07/2025
It's more heading to an "Advanced Money Doubler". Amazing run from #AMD stock.
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John Opdenakker @j-opdenakker.bsky.social · 15/07/2025
One of the “hated” stocks and often named “Advanced Money Destroyer” is not doing bad at all ;). #AMD
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John Opdenakker @j-opdenakker.bsky.social · 04/07/2025
Intune is a little out of tune recently. What a mess.
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John Opdenakker @j-opdenakker.bsky.social · 01/07/2025
When everybody is melting in Belgium it’s quite enjoyable here at 25 degrees. Cheers 🍻
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John Opdenakker @j-opdenakker.bsky.social · 01/07/2025
When 🤡 🤡 🤡 reign a country
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John Opdenakker @j-opdenakker.bsky.social · 26/06/2025
Just terrible. www.bbc.com/news/article...
bbc.com
NHS ransomware attack contributed to patient's death
An NHS trust in London confirms an unexpected patient death during the cyber attack on 3 June 2024.
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John Opdenakker @j-opdenakker.bsky.social · 22/06/2025
The world is reigned by lunatics
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John Opdenakker @j-opdenakker.bsky.social · 11/06/2025
I'm my own worst critic. It's tiring. Very tiring... No matter how much I try to convince myself that "good enough" is okay, I still don't act like it most of times. I guess it's a long-time learning process. Recognizable?
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John Opdenakker @j-opdenakker.bsky.social · 10/06/2025
Dear network, I'm currently building out my side gig. If you are looking for some information security expertise or you know a company who does, please let me know. For more details about my advisory services, see reply. Contact me via DM or johnopdenakker.com/contact/ Reposts appreciated!
johnopdenakker.com
Contact
If you want to contact me please use one of the channels listed at the end of this page. As my time is valuable, I'll have to make a judgement and will only react to questions and requests I consider ...
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John Opdenakker @j-opdenakker.bsky.social · 10/06/2025
Damn man, it's getting terrible recently. I get scam calls from all over the world. Why the sudden influx? Does anyone know/experience the same?
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John Opdenakker @j-opdenakker.bsky.social · 10/06/2025
Chatgpt seems very much down at the moment. Does that mean that I need to be creative myself?
media.tenor.com
a close up of a robot 's head with a red light on it .
ALT: a close up of a robot 's head with a red light on it .
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John Opdenakker @j-opdenakker.bsky.social · 06/06/2025
The fight - ego clash - between Musk and Trump is both mouth watering and extremely sad.
media.tenor.com
a man in a suit and tie is eating popcorn and says " i 'm waiting "
ALT: a man in a suit and tie is eating popcorn and says " i 'm waiting "
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John Opdenakker @j-opdenakker.bsky.social · 05/06/2025
Someone still alive on this platform? Just let me know 😜
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John Opdenakker @j-opdenakker.bsky.social · 05/06/2025
Provider internet modem replaced by a new one. Let's hope my dodgy internet is finally fixed now. Non or poorly working internet is so frustrating.
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John Opdenakker @j-opdenakker.bsky.social · 02/06/2025
If you'd bought crowdstrike stock shortly after the incident of last year, you'd (almost) doubled your money.
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John Opdenakker @j-opdenakker.bsky.social · 02/06/2025
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John Opdenakker @j-opdenakker.bsky.social · 26/05/2025
If you're in Europe and you haven't objected to meta using your data for AI training purposes it's about time. You still have a little bit of time to do so before they start with it. www.euronews.com/next/2025/05...
euronews.com
How to stop Meta from using your data to train its AI
At the end of May, Meta will start using Europeans’ data to train its AI. Here is how you can exercise your rights and prevent it.
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John Opdenakker @j-opdenakker.bsky.social · 25/05/2025
My latest follower. Makes me think about good old Twitter times. Scambots a volonte
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John Opdenakker @j-opdenakker.bsky.social · 19/05/2025
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John Opdenakker @j-opdenakker.bsky.social · 19/05/2025
As this report highlights TU/e (University of Eindhoven) did a good job at IR, kudos to them for that. Also yet another example that orgs get still hit through the weak spots and that this is often authentication (password/lack of MFA) related. 1/2 www.tue.nl/en/news-and-...
tue.nl
‘TU/e acted well in cyber attack, but there are also learning points’
Investigation: perpetrators unknown, they were likely out for ransom.
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John Opdenakker @j-opdenakker.bsky.social · 15/05/2025
Only a few weeks ago it was 4. Sentiment can change rapidly. If you have money to invest, buy when others are fearful.
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John Opdenakker @j-opdenakker.bsky.social · 28/04/2025
It’s been a while. I’ve taken some time off from social media. How are you all doing?
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John Opdenakker @j-opdenakker.bsky.social · 13/03/2025
Hello bluesky my old friend…
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John Opdenakker @j-opdenakker.bsky.social · 19/02/2025
What are your favorite stocks currently and why?
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John Opdenakker @j-opdenakker.bsky.social · 17/02/2025
Or you could remove Teams altogether. Oh how much I hate that tool.
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John Opdenakker @j-opdenakker.bsky.social · 17/02/2025
Wassup?
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John Opdenakker @j-opdenakker.bsky.social · 10/02/2025
One of the (multiple) reasons why I never (unless strictly necessary) enter my real phone number for online orders…
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John Opdenakker @j-opdenakker.bsky.social · 01/02/2025
To celebrate change your password day I’m offering a free service: send me your password and I’ll change it for you!
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John Opdenakker @j-opdenakker.bsky.social · 29/01/2025
Nice one. Google now labels VPN apps that prioritize privacy and security. Apps must pass MASA (Mobile Application Security Assessment) Level 2, have 10K+ installs, 250+ reviews and encrypt data. android-developers.googleblog.com/2025/01/help... #infosec #cybersecurity
android-developers.googleblog.com
Helping users find trusted apps on Google Play
Google Play is introducing a new "Verified" badge for consumer-facing VPN apps that meet high security and privacy standards.
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John Opdenakker @j-opdenakker.bsky.social · 22/01/2025
Data retention? Someone? Please? Toronto District School Board data breach could include 40 years of student records. www.villagereport.ca/village-pick... #infosec #privacy
media.tenor.com
a man in a purple shirt makes a surprised face
ALT: a man in a purple shirt makes a surprised face
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John Opdenakker @j-opdenakker.bsky.social · 20/01/2025
Let’s call them burn-audits from now on, okay? What a shit load of work every single time to prepare. Working in infosec is just unhealthy.
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John Opdenakker @j-opdenakker.bsky.social · 19/01/2025
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John Opdenakker @j-opdenakker.bsky.social · 08/01/2025
Who'd thought there was a quantum computing stock bubble 😉 finance.yahoo.com/news/quantum...
finance.yahoo.com
Quantum Computing Stocks Sink as Nvidia CEO Says Tech Is 15 to 30 Years Away
Several stocks across the quantum computing industry fell sharply Wednesday after Nvidia CEO Jensen Huang said the technology is likely still years away.
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John Opdenakker @j-opdenakker.bsky.social · 05/01/2025
Found another gem while cleaning up my hard drive. 😂 #infosec
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John Opdenakker @j-opdenakker.bsky.social · 05/01/2025
Lol, I found this one on my PC. Oldie but goldie 😂
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John Opdenakker @j-opdenakker.bsky.social · 05/01/2025
Instead of reporting the data breach "Westend falsely claimed data was lost through a formatting mistake involving a server hard drive". Now they have to pay $350K. www.databreachtoday.com/dental-pract... #infosec #ransomware
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John Opdenakker @j-opdenakker.bsky.social · 04/01/2025
Which resources would you recommend to learn about stock trading?
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Reposted by John Opdenakker
SwiftOnSecurity @swiftonsecurity.com · 04/01/2025
InfoSec protecting ppl from bad passwords
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John Opdenakker @j-opdenakker.bsky.social · 01/01/2025
Don’t forget to increment the year in your password.
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John Opdenakker @j-opdenakker.bsky.social · 01/01/2025
I remember 2024 like it was yesterday.
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John Opdenakker @j-opdenakker.bsky.social · 01/01/2025
My New Year's resolution is to procrastinate. I'll start tomorrow.
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John Opdenakker @j-opdenakker.bsky.social · 01/01/2025
Happy New Year!
media.tenor.com
a happy new year greeting card with a penguin and a bitcoin
ALT: a happy new year greeting card with a penguin and a bitcoin
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