‼️ Over the last few days, #Guinea started blocking access to social media… again. OONI data shows the blocking of Facebook, TikTok, and YouTube on Orange Guinée (AS37461) by means of TLS interference. Learn more: explorer.ooni.org/findings/106... 🐙 #ooni #censorship #opendata

‼️ Saudi Arabia just blocked Tinder explorer.ooni.org/findings/305... Today, OONI data shows that Tinder started being blocked on Mobily (AS35819) by means of TLS interference. We were alerted of this block through our new Censorship Alert System, an internal prototype we're testing. 🙏🐙 #ooni

According to WHO, access to accurate health information is essential for informed reproductive healthcare decisions. 🙏 Restricting access to that information can undermine people's ability to obtain timely, safe care and exercise their reproductive rights. ooni.org/post/2026-it... #ooni #opendata

❗️Starting in mid-February 2026, at least 6 ISPs in #Italy started blocking access to the Women on Web and Women Help Women reproductive health websites. OONI data shows bogon IP responses, NXDOMAIN errors, and DNS responses directing users to block pages. ooni.org/post/2026-it... #ooni #opendata

🔴 Italy Blocks Reproductive Health Websites Women on Web (WoW) and Women Help Women (WHW) ooni.org/post/2026-it... In collaboration w/ WoW, we co-published a new report documenting the blocking of the WoW and WHW websites in #Italy based on OONI data. #ooni #censorship #reproductivehealth

We're excited to share that we've revamped our Get Involved page and launched a new OONI Resources hub! 😍🐙 • Get Involved: ooni.org/get-involved/ • Resources: ooni.org/support/reso... We've made it easier to discover training materials, research documentation, localization opportunities & more! ✨️

Wondering how researchers, journalists, and human rights advocates use OONI data? 🐙 We published a new “Citations & Press” page highlighting OONI’s coverage in the press, as well as citations in research and advocacy publications: ooni.org/about/citati... ✨ #ooni #opendata #censorship

Neo-cypherpunk Summit presents @hellais.bsky.social x @ooni.org, ex-@torproject.org, GlobaLeaks. How the the global intrnet censorship landscape has changed, and what are the new challenges and opportunities to use rich technical data to fight it. Watch: www.youtube.com/watch?v=Q39U...

Measuring the Internet to fight censorship / Arturo Filastro, OONI

YouTube video by Web3Privacy Now

youtube.com

From Heuristics to Anonymous Credentials: Assessing OONI's Approach to Bad Measurements ooni.org/post/2026-fa... In our latest blog post, we share: • New heuristics & strategies for mitigating faulty measurements • An evaluation of the effectiveness of our new Anonymous Credential System 🐙✨ #ooni

⚖️ Kenya's High Court ruled the government cannot arbitrarily block websites, striking down the Cybercrimes Act clause behind past shutdowns. The winning petition drew on OONI's evidence of Telegram blocking during KCSE exams. 🌐 📄 Our report: ooni.org/post/2025-ke...

Although the impact estimated in our study is already substantial, our methodology is a lower bound, meaning that the true extent of the impact is likely higher than our reported figures. Learn more: ooni.org/post/2026-la... We thank OONI Probe users in #Spain for contributing measurements. 🙏

Collateral Damage of IP-Based Blocking During LALIGA Football Streaming in Spain: Evidence from OONI Measurements

This report documents the widespread collateral damage caused by IP-based blocking during LALIGA football match broadcasts in Spain, based on OONI data and DNS scans.

ooni.org

OONI data from #Spain shows that blocking implementation varied across ISPs. Blocking by most ISPs was largely confined to LALIGA match time windows, with minimal evidence of spillover outside broadcast periods. ooni.org/post/2026-la...

‼️ We also detected TLS Man-in-the-Middle (MitM) attacks on Digi Mobil (AS57269), raising privacy and security concerns. OONI data from Digi Mobil in #Spain reveals that 7,334 unique IPs in 14 ASNs, hosting a total of 10,759 domain names, were affected by TLS MitM attacks. ooni.org/post/2026-la...

At least 36 infrastructure and hosting providers were impacted by the IP-level blocking observed during LALIGA match broadcasts. OONI data from #Spain reveals the blocking of 7,441 unique IP addresses belonging to 36 organizations (e.g. Amazon, Cloudflare, Alibaba Cloud). ooni.org/post/2026-la...

During most LALIGA broadcasts on multiple networks in #Spain, blocking just 4–20 IP addresses in a 1-hour window led to significant collateral damage, affecting over 400,000 unique domains. ooni.org/post/2026-la...

At least 5.8% of the internet’s most popular domains were found to be blocked in #Spain. Out of 9.2 million domains tested, we found at least 554,510 domains blocked (including @amnesty.org) at some point in time in Spain during the LALIGA football match broadcasts. ooni.org/post/2026-la...

🔴 New report: Collateral Damage of IP-Based Blocking During LALIGA Football Streaming in Spain: Evidence from OONI Measurements ooni.org/post/2026-la... Our latest report documents widespread collateral damage caused by IP blocks in #Spain during LALIGA football broadcasts over the past 6 months.

🎉 We're excited to announce the new OONI Probe Desktop App for Windows and macOS! ooni.org/post/2026-ne... New features include a new dashboard, a new "OONI News" section with censorship reports, support for OONI Run links, and more! ✨ Download OONI Probe Desktop today: ooni.org/install/ 🐙 #ooni

📢 Only 15 hours left to support OONI in the internet freedom quadratic funding campaign: internetfreedom.torproject.org/projects/ooni/ 🐙✨ Every contribution helps. Even small donations can have an outsized impact. Thank you for your support 🙏❤️ #FundInternetFreedom #ooni

Freedom is strongest when it's supported by you. @agrabeli6.bsky.social x Director of Strategic Engagement in @ooni.org on why internet censorship monitoring funding matters. Donate to @torproject.org ecosystem now: internetfreedom.torproject.org/projects/ooni/ internetfreedom.torproject.org

‼️ Two days ago, #India began blocking access to Telegram across multiple networks amid concerns over exam fraud. OONI data shows that ISPs in India are implementing the block through DNS tampering, as well as TLS and IP-level interference. Learn more: explorer.ooni.org/findings/321... 🐙 #ooni

When Local Blocks Go Global: The India-Telegram BGP Incident In this post, I dig into the leaked hijack intended to block Telegram in India — the latest intentional, but also accidental BGP mishap, in which a domestic block escapes, disrupting a service worldwide. www.kentik.com/blog/when-lo...

When Local Blocks Go Global: The India-Telegram BGP Incident

Yesterday’s leak of a BGP hijack intended to block Telegram in India is the latest routing mishap best described as intentional, but also accidental — a pattern dating back to Pakistan Telecom’s infam...

kentik.com

The BGP hijack may be over, but Telegram is still getting blocked in India according to measurements from @ooni.org: explorer.ooni.org/chart/mat?pr...

As part of an effort to block Telegram, AS18101 of India hijacked BGP routes of the messaging service — with limited propagation due to route filtering. The red sliver in the dotted box represents the propagation of AS18101's hijack — not nothing but RPKI ROV helped to limit the impact.

Beyond ISP-level blocks, our analysis of OONI data also identified cases where Women on Web’s website was inaccessible due to corporate firewall filtering in several countries. Learn more in our report: ooni.org/post/2026-wo... We thank OONI Probe users globally for contributing measurements. ❤️🐙

Since February 2020, access to Women on Web has been blocked on multiple networks in #Spain. Although the Spanish Supreme Court ordered the partial unblocking of Women on Web in October 2022, OONI data indicates that block remains in place on several networks. ooni.org/post/2026-wo...

OONI data shows that access to Women on Web has been blocked in #SouthKorea since January 2019. Unlike in other countries, where blocking is limited to Women on Web's main website, South Korea also blocks additional Women on Web domains created to circumvent censorship. ooni.org/post/2026-wo...

OONI data suggests that access to Women on Web may have been blocked in the #Philippines as early as January 2025 on some networks. The block is primarily implemented at the DNS level. ooni.org/post/2026-wo...

Access to Women on Web has been blocked in #Türkiye since 2019. On most networks in Türkiye, OONI data shows that the connection was reset or timed out after the ClientHello message during the TLS handshake. ooni.org/post/2026-wo...

Out of the 7 countries which present signs of Women on Web blocking, #Iran presented the strongest signal because the block is both automatically confirmed and visible on most tested networks. ooni.org/post/2026-wo...