Coupe Circuit 📴

Graph from NetBlocks showing network connectivity in Iran from February 24, 2026, to March 4, 2026. The y-axis represents normalized connectivity, ranging from 0% to 100%, and the x-axis represents the dates. The green line representing Iran's connectivity normal most of the time period, with a sharp drop on the morning of February 28. The drop in connectivity aligns with nation-scale internet blackout imposed during joint military strikes by the US and Israel. The minimum and current connectivity levels are indicated as 1% and 1%, respectively. The chart has a dark background with a red horizontal arrow labeled 'SHUTDOWN', indicates the period of disruption and includes the NetBlocks logo in the lower left corner.

⚠️ Update: #Iran has now been offline for 100 hours. Metrics show internet connectivity flatlining at 1% of ordinary levels as the regional conflict escalates.

The regime-imposed blackout is the second this year and follows the shutdown in January when thousands were killed.

Nearly all of the Iranian internet has been down for 43+ hours but, as was the case with last month's shutdown, there is a tiny amount of traffic still getting passed.

Within the remaining traffic, we can see subsequent outages, possibly caused by continued US/IL airstrikes…🧵

Graph from NetBlocks showing network connectivity in Iran from February 24, 2026, to March 2, 2026. The y-axis represents normalized connectivity, ranging from 0% to 100%, and the x-axis represents the dates. The green line representing Iran's connectivity normal most of the time period, with a sharp drop on the morning of February 28. The drop in connectivity aligns with nation-scale internet blackout imposed during joint military strikes by the US and Israel. The minimum and current connectivity levels are indicated as 1% and 1%, respectively. The chart has a dark background with a red horizontal arrow labeled 'SHUTDOWN', indicates the period of disruption and includes the NetBlocks logo in the lower left corner.

⚠️ Update: #Iran's internet blackout has now surpassed 48 hours, leaving its population of 90 million out of touch as war spreads.

Shutdowns are a go-to tactic for the regime, with the previous instance in January lasting several weeks and masking severe human rights violations.

Le régulateur russe des télécoms, Roskomnadzor, a désormais banni 469 services VPN, d’après l’agence de presse russe Ria Novosti.

Courts-circuits | 23 février-1er mars 2026

coupecircuit.substack.com/p/469-vpn-bl...

Comment le blackout internet en Iran redessine le rôle du secteur privé

🇮🇷 La coupure internet en Iran a mis en avant le rôle du secteur privé dans la censure numérique.

Iran : analyse d’une coupure internet sans précédent - partie 2/3

coupecircuit.substack.com/p/comment-le...

Request for Proposals: Security Lab OTF is soliciting proposals from Information Security professionals and organizations to provide services to our Security Lab. Apply by March 16, 2026.

Are you a cybersecurity expert that wants to improve the security of privacy-enhancing and censorship circumvention technologies that are used in authoritarian contexts?

Apply to join @opentechfund.bsky.social’s Security Lab as a partner by March 16!

Learn more:

Chart from NetBlocks showing platform feature restrictions by ISP in Gabon in February 18, 2025. The data indicates widespread internet restrictions affecting social media and messaging platforms including Facebook, WhatsApp, Instagram, YouTube, and Tiktok. Access issues are observed across major ISPs such as Airtel and Canalbox and Gabon Telecom with services showing varying levels of reachability, in some cases down to 0%.

⚠️ Confirmed: Metrics show multiple online platforms are now restricted in #Gabon after the High Authority for Communication (HAC) announced the immediate suspension of social media in the country, citing its use to disseminate "inappropriate" content among other grievances

Not Safe for Politics: Cellebrite Used on Kenyan Activist and Politician Boniface Mwangi - The Citizen Lab Following the widely-condemned arrest in July 2025 of prominent Kenyan opposition voice Boniface Mwangi, the Citizen Lab analyzed artefacts from devices seized during the arrest. We found that Cellebr...

NEW @citizenlab.ca report: Cellebrite Used on Kenyan Activist and Politician Boniface Mwangi

citizenlab.ca/research/cel...

La Russie a bloqué l’accès à Telegram, WhatsApp et YouTube.

Le Kremlin veut pousser l’utilisation de ses propres applications alternatives comme la messagerie instantanée Max et promeut un “internet souverain”...

coupecircuit.substack.com/p/spaciba-te...

🇺🇬 Des SMS pro-Museveni envoyés aux clients de MTN en plein blackout numérique

La nouvelle édition de Courts-circuits (2-8 février 2026), c'est par-ici : coupecircuit.substack.com/p/des-sms-pr...

Today marks 4 weeks since the #Internet disruption in #Iran began. While traffic to Cloudflare has returned to pre-shutdown levels over the last several days, general Internet connectivity remains filtered and limited by allowlists.

radar.cloudflare.com/traffic/ir?d...

Comment l’Iran a coupé internet pour près de 90 millions de personnes

🇮🇷 On explore ce qu'il s'est passé, exactement, pour l'internet iranien en janvier. Chiffres, graphiques & chronologie à l'appui 📊

Iran : analyse d’une coupure internet sans précédent 1/3
coupecircuit.substack.com/p/comment-li...

Graph from NetBlocks showing network connectivity in Iran from January 2, 2026, to January 30, 2026. The y-axis represents normalized connectivity from 0% to 100%, and the x-axis represents dates. The green line representing Iran's connectivity remains normal most of the time period, with a sharp drop on the evening of January 8, when connectivity falls from above 90% to near zero. Connectivity remains almost entirely offline for an extended period, with only minimal and sporadic activity, before a partial restoration appears at the end of the period on January 27 under heavy filtering. A red horizontal arrow labelled “SHUTDOWN” marks the duration of the disruption, with an annotation on the top right reading “filtered intermittent connectivity.” The disruption aligns with a nationwide internet shutdown imposed by authorities amid unrest. The minimum and current connectivity levels are shown as 1% and 95%, respectively. The chart has a dark background and includes the NetBlocks logo in the lower left corner.

🗓️ It's Friday evening in #Iran where internet remains heavily filtered 22 full days after the blackout as whitelisting and intermittent connectivity continue to limit Iranians' contact with the outside world. Networks are visible internationally but broadly restricted.

Des signes montrent un fragile retour d'une certaine forme de connectivté depuis l'Iran 🇮🇷

Mais la réalité pourrait être plus complexe...

📰 coupecircuit.substack.com/p/retour-de-...

Graph from NetBlocks showing network connectivity in Uganda from January 7, 2025, to January 14, 2025. The y-axis represents normalized connectivity, ranging from 0% to 100%, and the x-axis represents the dates. The green line representing Uganda's connectivity remains normal most of the time period, with a sharp drop on the evening of January 13. The drop in connectivity aligns with upcoming general elections and a shutdown order issued by the Uganda Communications Commission. The minimum and current connectivity levels are indicated as 20% and 20%, respectively. The chart has a dark background with a red circle highlighting the decline, followed by an period of diminished connectivity that is ongoing.

ICYMI: #Uganda is currently in the midst of a widespread internet shutdown as telecoms regulator UCC imposes a blackout in advance of tomorrow's general election.

Far from halting misinformation, the measure is likely to limit transparency and increase the risk of vote fraud 🗳️

Chart from NetBlocks showing platform feature restrictions by ISP in Venezuela from January 13, 2025, to January 14, 2025. The data indicates internet restrictions affecting social media platform X (formerly Twitter). Access issues are observed across major ISPs such as Inter, 4net and NetworkSpeed with services showing no reachability.

ℹ️ Note: Metrics show that social media platform X remains restricted in #Venezuela despite claims that access had been restored; the measure has now been in place for over a year

Iranian-linked Scottish accounts fall silent again A network of social media accounts posing as Scottish independence supporters has fallen silent once again, closely mirroring a fresh shutdown of internet access inside Iran.

A network of social media accounts posing as Scottish independence supporters has fallen silent once again, closely mirroring a fresh shutdown of internet access inside Iran.

24 hours on and #Internet connectivity in #Uganda remains almost completely unavailable. Services were suspended by order of @UCC_Official, with a "strictly defined exclusion list" permitting limited access to essential services.

radar.cloudflare.com/traffic/ug?d...

x.com/kyleville/st...

Uganda's Internet connectivity continues to be compromised. See event page for latest pulse.internetsociety.org/en/shutdowns...

Iran crippled Starlink and why the rest of the world should worry The service became synonymous with censorship-proof connectivity. Iran has just proved that assumption wrong.

Iran's internet shutdown is systematically crippling Starlink, the satellite internet service from Elon Musk that is said to be almost impossible to jam
restofworld.org/2026/iran-st...

Ouganda : l'internet coupé deux jours avant le scrutin Une coupure internet a débuté en Ouganda, deux jours avant l'élection présidentielle.

Ouganda : l'internet coupé deux jours avant le scrutin

Le gouvernement avait pourtant promis de maintenir l’accès à internet avant l'élection présidentielle...

coupe-circuit.ghost.io/ouganda-coup...

Cette information a (malheureusement) été confirmée par Netblocks et @radar.cloudflare.com...

bsky.app/profile/rada...

🚨 URGENT 🇺🇬 Possible suspension de l'internet en Ouganda à venir

Une source vient de me partager un document en provenance de la Uganda Communications Commission, prévoyant une suspension de l’accès à internet dans le pays à 18 heures ce 13 janvier. A croiser avec d'autres sources.

🇮🇷 L'Iran vit la plus grande coupure internet de son histoire

Pour comprendre ce qu'il se passe dans le pays, c'est par ici : coupecircuit.substack.com/p/liran-vit-...

Du Rajasthan, à l'ouest, à l'Assam, à l'est, les Etats indiens ont le même réfflexe en cas de problèmes d'ordre public : couper les vannes de l'internet.

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Pourquoi Taïwan bloque RedNote (mais pas TikTok)

Cette semaine, dans Coupe-circuit: open.substack.com/pub/coupecir...

GreatFire balance tout !

Après des mois à tenter de protéger Vultr, @greatfire.org a révélé le rôle central de l’entreprise américaine dans la censure que le géant chinois Tencent essaie de lui imposer en demandant la suppression de son site FreeWeChat.

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En Ouganda, le secrétaire de la Commission électorale a révélé que les autorités du pays pourraient restreindre l’accès aux réseaux sociaux en préparation des élections générales prévues pour mi-janvier 2026.

La nouvelle édition de Courts-circuits: coupecircuit.substack.com/p/un-scrutin...

Pour les plus friands de détails techniques mais pas forcément anglophones, j’ai aussi concocté un tableau résumant les résultats de l’analyse des chercheurs, à découvrir ici : datawrapper.dwcdn.net/Ea0qo/13/

Votre VPN est-il vulnérable à la censure numérique ?

Des chercheurs de l’IIIT Delhi, en Inde, se sont demandé dans quelle mesure un gouvernement pourrait détecter du trafic VPN et ainsi (potentiellement) le bloquer.

On vous explique ce qu'ils ont trouvé ⬇️

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