Martijn Grooten

Martijn Grooten

@martijngrooten.bsky.social

Threat researcher, rights supporter, obsessive reader, marathon runner, eternal traveler, serial migrant, music blogger, lapsed mathematician. https://lapsedordinary.net/ Signal: martijngrooten.37

5,124 Followers 303 Following 1,260 Posts Joined Jul 2023
3 hours ago

Probably not my favourite city in the world but seriously underrated nevertheless.

I once discovered an independent bookshop which was also where the local queer community hung out. Sadly, I believe it didn't survive the pandemic.

The Asian Civilizations Museum is one of the best in the world.

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5 hours ago

Sterkte!

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5 hours ago
The Femcels - I Have To Get Hotter

The Femcels – Not ur Friend

A ‘femcel’ is a voluntary celibate woman and listening to the lyrics on London’s The Femcels’ debut album I Have to Get Hotter, either that name or those lyrics are not to be taken literally. They make music not dissimilar to ➡️

ftherules.net/2026/03/14/t...

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1 day ago
Water Campaign

Between September 2024 and March 2025, Hydra Saiga conducted an extensive campaign targeting critical water infrastructure, research institutions, and government ministries. The targeting was specifically focused on infrastructure linked to the two major regional rivers: the Syr Darya and Amu Darya.

This campaign led to compromises within:

    The operator of hydroelectric power plants and the water resource service in Kyrgyzstan.
    A regional administration, a research institute, and the Ministry of Water Resources in Uzbekistan.
    The Ministry of Energy and Water Resources in Tajikistan.

And then a map of Central Asia with them locations of riversd

This is a long, very detailed analysis of a malware campaign by a Kazakhstan-aligned threat actor. But the most important bit, that says a lot about the world today, is the campaign's focus on critical water infrastructure www.vmray.com/hydra-saiga-...

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1 day ago
Help Center End-to-end encryption adds extra security and protection to your messages and calls in a chat so that only you and whoever you're talking to can see, hear or read them.

"End-to-end encrypted messaging on Instagram will no longer be supported after May 8, 2026."
help.instagram.com/491565145294...

I don't know how many at-risk people this will affect. I do know that a service removing encryption (even if it was only ever opt-in) does make me unhappy.

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1 day ago

I often think of the 1994 genocide in Rwanda and the way it is viewed in 'the West' as something 'those people do' that we don't do and... history shows that we are very much capable (and willing) of doing exactly those things.

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1 day ago

The banality of evil.

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1 day ago
Preview
The Market for Spyware is Growing: It's Used Differently Against Women - The Citizen Lab Senior researcher and co-author of the report, Noura Aljizawi, speaks to the Fuller Project about the concerning ways gender is still being weaponized to silence women.

This of course makes sense if you think about it for a few seconds: spyware is used differently against women citizenlab.ca/the-market-f...

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1 day ago

I don't watch a lot of visuals, mostly getting my information through text and audio, but I just saw an aerial photo of the graves being dug for those Iranian school children killed in the US air strike.

This is so incredibly bad.

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1 day ago

Congrats! Great work!

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2 days ago
Preview
Certbot and Let's Encrypt Now Support IP Address Certificates (Note: This post is also cross-posted on the Let's Encrypt blog)As announced earlier this year, Let's Encrypt now issues IP address and six-day certificates to the general public. The Certbot team her...

www.eff.org/deeplinks/20...

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2 days ago
Club 8 - Seasonal Echoes

Club 8 – Lazy

Oh hey, Club 8 is still around. It appears the Swedish duo has been making music all this time while I wasn’t paying attention, with their most recent album (Seasonal Echoes) released in 2025 (on Darla). They still make ➡️

ftherules.net/2026/03/12/c...
@darlarecords.bsky.social

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2 days ago
Preview
Digital Rights Amid a Regional War: Threats and Responses - SMEX Beirut, March 9, 2026 — Israel has displaced more than half a million Lebanese residents from South Lebanon, Beirut, and...

What did the first week of the regional war in Lebanon, the Gulf, and Iran look like on the digital front?

SMEX breaks down the key developments and what they mean for rights online.

Read more:
smex.org/digital-righ...

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3 days ago
Preview
11 March 2026: Noise about Signal Welcome to a new edition of my irregular digital security newsletter, where this time I write about Signal (and WhatsApp and Telegram) phishing. I am currently looking for work, contract (including p...

I just sent out a new edition of my digital security newsletter. This time I looked at the Signal (and WhatsApp/Telegram) phishing, following a much discussed report by Dutch intelligence travels-in-digital-security.ghost.io/11-march-202...

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3 days ago

I see what you did there.

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3 days ago
New Bad Things - Freewheel!

New Bad Things – Freemason Love Triangle

There is a small part of my brain that for the past 30 years has remembered the song Freemason Love Triangle by Portland, Oregon’s New Bad Things. In fairness, it is a really great song title. It is also a really great ➡️

ftherules.net/2026/03/11/n...

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3 days ago
Preview
11 March 2026: Noise about Signal Welcome to a new edition of my irregular digital security newsletter, where this time I write about Signal (and WhatsApp and Telegram) phishing. I am currently looking for work, contract (including p...

I just sent out a new edition of my digital security newsletter. This time I looked at the Signal (and WhatsApp/Telegram) phishing, following a much discussed report by Dutch intelligence travels-in-digital-security.ghost.io/11-march-202...

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3 days ago

My 'read' shelf on Goodreads reached 1000 books today. Dunno, that's kinda cool.

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3 days ago

I've introduced myself in talks saying my cybersecurity career is old enough to buy a beer (it's still drinking water in the US). I should probably change that to: my cybersecurity career is old enough to be on social media.

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3 days ago

DINO?

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3 days ago
Post image

We are looking for a Content Writer to develop a Digital Safety Storybook for Children that helps children aged 7–12 learn about online safety through engaging and child-friendly storytelling.
📅 19 March 2026
📩 jobs@7amleh.org
📝 Read the full TOR on our website: 7amleh.org/post/tor-con...

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3 days ago
Preview
Iranians rethink the price of regime change Destructive US and Israeli war and Islamic republic’s resilience have alarmed even those who supported foreign intervention

“Reza Pahlavi, the exiled son of the late ousted Shah, also supported military action, promising to return to lead Iran once the regime had collapsed. ‘Maybe he should come now with his three daughters and see how it feels to be bombarded,’ said one woman, who opposes the current regime.”

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4 days ago
The Telephone Numbers - Scarecrow II

The Telephone Numbers – Telephone Numbers Theme

“Mr. Watson, come here, I want to see you” said Alexander Graham Bell to Thomas A. Watson over the telephone, exactly 150 years ago today. Telephone numbers wouldn’t come into use until 1879 ➡️
@slumberlandrecords.com

ftherules.net/2026/03/10/t...

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5 days ago
Preview
The mystery of a globetrotting iPhone-hacking toolkit Tools used in a series of hacking campaigns by hackers in Russia, Ukraine, and China may have originated inside U.S. government contractor L3Harris, TechCrunch has learned.

SCOOP: The iPhone mass hacking toolkit used by Russian spies was developed at U.S. military contractor L3Harris, former employees said.

The Coruna toolkit was used against Ukrainians and by Chinese cybercriminals, according to Google. But the toolkit was initially developed for Western governments.

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5 days ago

*through

Darn that lack of edit button. I cheated by taking planes to and from there. (But locally, I travelled by train, coach and taxi.)

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5 days ago
Minaret and madrassa entrance in the evening, with yellow and red light shining at them Road and bridge over mountain terrains Lenin statue with a building and some trees in the background Four grey blocks of flats, under construction

I needed a mental health trip so I spent two weeks travelling to four countries in Central Asia. I saw so much (and I only really visited cities). I learned so much. My energy levels got refueled so much.

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5 days ago

It starts tasting sour after a while but if you take off the scum, it will continue to be alright for a few more months.

PS I seriously didn't know this

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6 days ago

I mean, the 1953 coup suggests at the time the US wasn't on the side of the people of Iran...

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6 days ago

Just noting here that the Supreme Leader of the United States of America and people in his inner circle are using genocidal language against the people of Iran.

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1 week ago

Back in my maths days, I attended a seminar in Abelian varieties and I wouldn't have guessed in a thousand years that they would have real world applications.

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