Martijn Grooten's Avatar

Martijn Grooten

@martijngrooten.bsky.social

Threat Intelligence for Silent Push. Digital security for at-risk people. Researcher, reader, runner. Eternal traveler, serial migrant, music lover, lapsed mathematician. Signal: martijngrooten.37

4,803 Followers  |  274 Following  |  756 Posts  |  Joined: 04.07.2023  |  2.1412

Latest posts by martijngrooten.bsky.social on Bluesky

Preview
‘A million calls an hour’: Israel relying on Microsoft cloud for expansive surveillance of Palestinians Revealed: The Israeli military undertook an ambitious project to store a giant trove of Palestinians’ phone calls on Microsoft’s servers in Europe

satya.. this is not okay. www.theguardian.com/world/2025/a...

06.08.2025 12:50 — 👍 23    🔁 12    💬 0    📌 1
A Survivor-Centric, Trauma-Informed Approach to Stalkerware
YouTube video by Black Hat A Survivor-Centric, Trauma-Informed Approach to Stalkerware

Throwback to four years ago, when @lodrina.bsky.social and I spoke at Black Hat youtu.be/lz7p8uXr1_U?...
Still makes me a bit sad that I couldn't attend (or present) in person because of the pandemic.

05.08.2025 00:26 — 👍 2    🔁 0    💬 0    📌 1

As I get ready to move countries once again, I remind myself of my chronic anxiety, which half the days means I'd rather not get out of bed in the morning, and conclude I've not done too badly in life after all.

04.08.2025 21:33 — 👍 1    🔁 0    💬 0    📌 0

This is an amazing thread

29.07.2025 11:37 — 👍 331    🔁 79    💬 6    📌 0
Last-minute CFP still open 
Time to Stand Out
VB2025 Berlin 24-26 Sept 2025

Last-minute CFP still open Time to Stand Out VB2025 Berlin 24-26 Sept 2025

🎤 Your work deserves a global stage.

Got fresh research, real-world insights, or case studies?
This is your moment to shine.

Last-minute submissions for #VB2025 still open!

📍 Berlin | 🗓️ 24–26 Sept
⏳ Deadline: 24 Aug

👉 tinyurl.com/3uvh2r9a

04.08.2025 13:07 — 👍 1    🔁 2    💬 0    📌 0

Any NYC-based lawyers with an interest in transnational repression interested in a chat?

02.08.2025 23:33 — 👍 3    🔁 6    💬 1    📌 0

Small correction: the article claims that the year 2000 was 25 years ago. In fact, it was five, perhaps six, years ago at most.

02.08.2025 18:26 — 👍 18    🔁 0    💬 0    📌 0
Preview
~this week in security~ a free cybersecurity newsletter by @zackwhittaker, delivered weekly.

If you (like me) need a round-up of all the cybersecurity news from the week you might've missed but need to know (plus lots more) my free newsletter ~this week in security~ goes out to thousands of readers every Sunday. There's good news, a reader-submitted cybercat, and no open/link tracking. ⬇️

02.08.2025 12:37 — 👍 10    🔁 2    💬 0    📌 0
DEF CON® Hacking Conference - Transparency Report DEF CON Hacking Conference Transparency Report

DEFCON has banned Eric Michaud. You need to be an exceptionally toxic sleazebag to get banned from DEFCON. There are literally only 4 other names on the list: John Draper, Jake Appelbaum, Morgan Marquis-Boire, and Chris Hadnagy. defcon.org/html/links/d...

01.08.2025 23:41 — 👍 296    🔁 76    💬 12    📌 4

Same. But then APT research is full of "this doesn't make sense".

30.07.2025 23:18 — 👍 0    🔁 0    💬 0    📌 0

This sucks and also, this has been the situation in Europe for a few years now. The worst part is that I've had to pay import duties on things friends sent me as presents.

30.07.2025 23:07 — 👍 5    🔁 0    💬 1    📌 0
The WaPa headline says: 60,000 Gazans were killed. 18,500 of them were children. These are some of their names. 

Then follows an enormous list of small print names

The WaPa headline says: 60,000 Gazans were killed. 18,500 of them were children. These are some of their names. Then follows an enormous list of small print names

Thousands of small print names interspersed with some photos of some of the child victims

Thousands of small print names interspersed with some photos of some of the child victims

NEW: 18,500 children have been killed by Israeli forces in Gaza.

The Washington Post has just published every single known name.

A seminal moment.

30.07.2025 10:29 — 👍 2722    🔁 1573    💬 58    📌 113

And in that latter sense in particular, I appreciate who he was and what he meant to me, even if in the past years — and those years before — I often wished he had been different. But this is who he was and in the end I guess that's okay.

29.07.2025 22:59 — 👍 5    🔁 0    💬 0    📌 0

I'm pretty stoic about death in general, but in the past year, there were many times where his death, and the relationship we had (and didn't have) suddenly hit me hard. And though I don't know what exactly I miss, I miss him. I am also a lot more him than I like to admit.

29.07.2025 22:59 — 👍 6    🔁 0    💬 1    📌 0

Yesterday was a year since my dad died. We weren't particularly close and our relationship, that mostly existed on WhatsApp, was awkward and superficial. I wasn't very shocked when he died, unexpected though it was. And yet... it is super weird for a parent to die and I hadn't really expected that.

29.07.2025 22:59 — 👍 3    🔁 0    💬 1    📌 0

Me, not a New Yorker, spent way too long thinking what the acronym BDFM could stand for (except the F, which was obvious)...

29.07.2025 19:48 — 👍 2    🔁 0    💬 1    📌 0

Look, Israel deserves all the punishments (that it likely will never get), but recognising Palestine is actually something that shouldn't be seen as a punishment to Israel but is right because Palestinians are human beings. (Here the usual disclaimer about countries being geosocial constructs.)

29.07.2025 18:33 — 👍 5    🔁 1    💬 0    📌 0
 - YouTube
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen. - YouTube

Google is currently showing ads paid for by the Israeli government on YouTube with a false claim that the UN hasn't delivered aid. The ads appear in at least 4 languages, the German version of which is being shown in Austria and Germany.

https://youtu.be/Zx4Ge2VRtiM

28.07.2025 12:46 — 👍 0    🔁 1    💬 1    📌 0

Probably, yes.

29.07.2025 16:06 — 👍 0    🔁 0    💬 0    📌 0

On the plus side, I rely on your newsletter for my security news more and more.

29.07.2025 16:06 — 👍 0    🔁 0    💬 0    📌 0

Why not solve the age verification problem by banning children?

29.07.2025 00:49 — 👍 9    🔁 0    💬 0    📌 0
Post image

Our colleague and longtime +972 Magazine contributor Awdah Hathaleen was shot dead in a settler attack on his village, Umm al-Khair, in Masafer Yatta.

Read Awdah's contributions to +972 Magazine through the link:

www.972mag.com/writer/awdah...

28.07.2025 20:44 — 👍 566    🔁 373    💬 18    📌 19
Message saying:

Hello cute 
What's up with you

Message saying: Hello cute What's up with you

Feeling cute, might block later

28.07.2025 13:47 — 👍 5    🔁 0    💬 0    📌 0

I thought all of Arizona was 110 degrees for 10 months per year or so!

27.07.2025 22:29 — 👍 0    🔁 0    💬 1    📌 0

I think I knew a band that was from there (relocated there). I didn't know it was a cute place though, but I like it!

27.07.2025 22:22 — 👍 1    🔁 0    💬 1    📌 0

Ah, yes!

27.07.2025 22:17 — 👍 0    🔁 0    💬 1    📌 0

I forgot who first used this in the context of exploit sales but for me the song is forever linked to that and I appreciate that.

27.07.2025 22:12 — 👍 7    🔁 0    💬 0    📌 0

Ha, this made me check if Flagstaff was maybe a Shakespeare character, for it sounds like one. (Nope.)

27.07.2025 22:11 — 👍 1    🔁 0    💬 1    📌 0

Huh, I'd love to talk to people doing that. Because these things are... complicated. (If you use Signal/WhatsApp as an ephemeral messenger — big if — then it's probably fine.)

27.07.2025 22:09 — 👍 2    🔁 0    💬 0    📌 0

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