<div dir="ltr">Hello,<br><br>These days we're primarily supported by the DRL, which is why we do quarterly reporting. That said, we'd like to share monthly updates from the OONI team with the community, hence our April <span class="gmail-il">2022</span> report shared below. I'll also follow-up to share our May and June <span class="gmail-il">2022</span> reports.<br><br><b># OONI Monthly Report: April <span class="gmail-il">2022</span></b><br><br>Throughout April <span class="gmail-il">2022</span>, the OONI team worked <span class="gmail-il">on</span> the following sprints:<br><br>* Sprint 62 (1st - 10 April <span class="gmail-il">2022</span>)<br>* Sprint 63 (11th - 24th April <span class="gmail-il">2022</span>)<br>* Sprint 64 (25th April - 30th April <span class="gmail-il">2022</span>)<br><br>Our work can be tracked through the various OONI GitHub repositories: <a href="https://github.com/ooni" target="_blank">https://github.com/ooni</a><br><br>Highlights are shared <span class="gmail-il">in</span> this report below.<br><br><b>## Launched the OONI Measurement Aggregation Toolkit (MAT)</b><br><br>We publicly launched OONI’s new Measurement Aggregation Toolkit (MAT): <a href="https://explorer.ooni.org/chart/mat" target="_blank">https://explorer.ooni.org/chart/mat</a><br><br>The MAT is a tool that enables the public to create their own custom charts based <span class="gmail-il">on</span> aggregate views of real-time OONI data collected from around the world. This tool was built for researchers, journalists, and human rights defenders interested <span class="gmail-il">in</span> examining internet censorship around the world.<br><br>When examining cases of internet censorship, it's important to look at many measurements at once ("<span class="gmail-il">in</span> aggregate") <span class="gmail-il">in</span> order to identify censorship trends and patterns. The MAT incorporates our data analysis techniques, enabling the public to answer such questions without any data analysis skills, and with the click of a button!<br><br>To provide further details about using the MAT and interpreting MAT charts, we wrote and published a blog post: <a href="https://ooni.org/post/2022-ooni-mat/" target="_blank">https://ooni.org/post/<span class="gmail-il">2022</span>-ooni-mat/</a><br><br>We hope the internet freedom community finds the MAT useful for investigating and responding to internet censorship events around the world.<br><br><b>### Preparing for the MAT launch</b><br><br><span class="gmail-il">In</span> preparation for the public launch of OONI’s Measurement Aggregation Toolkit (MAT), we:<br>* Improved the interaction between the table and the chart <span class="gmail-il">in</span> the multi-axis charts (<a href="https://github.com/ooni/explorer/pull/724" target="_blank">https://github.com/ooni/explorer/pull/724</a>);<br>* Added support for exporting data <span class="gmail-il">in</span> CSV format and added links to CSVs under the charts (<a href="https://github.com/ooni/explorer/pull/741" target="_blank">https://github.com/ooni/explorer/pull/741</a>);<br>* Wrote (and published) “Help” text for the MAT (<a href="https://github.com/ooni/explorer/issues/727" target="_blank">https://github.com/ooni/explorer/issues/727</a>);<br>* Worked <span class="gmail-il">on</span> several other bug fixes and improvements (<a href="https://github.com/ooni/explorer/pull/731" target="_blank">https://github.com/ooni/explorer/pull/731</a>, <a href="https://github.com/ooni/explorer/pull/732" target="_blank">https://github.com/ooni/explorer/pull/732</a>, <a href="https://github.com/ooni/explorer/pull/737" target="_blank">https://github.com/ooni/explorer/pull/737</a>, <a href="https://github.com/ooni/explorer/pull/740" target="_blank">https://github.com/ooni/explorer/pull/740</a>, <a href="https://github.com/ooni/explorer/pull/741" target="_blank">https://github.com/ooni/explorer/pull/741</a>).  <br><br><b>## OONI MAT shows social media blocks <span class="gmail-il">in</span> Sri Lanka</b><br><br>OONI’s new Measurement Aggregation Toolkit (MAT) was useful for enabling human rights defenders to corroborate the social media blocks that were reported <span class="gmail-il">in</span> Sri Lanka between 2nd to 3rd April <span class="gmail-il">2022</span>.<br><br>The following OONI MAT charts (which we shared with the #KeepItOn community) present aggregate views of OONI data, displaying the temporary blocking of social media services <span class="gmail-il">in</span> Sri Lanka <span class="gmail-il">on</span> 2nd and 3rd April <span class="gmail-il">2022</span>:<br><br>* Twitter: <a href="https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=web_connectivity&domain=twitter.com&since=2022-03-06&until=2022-04-06&axis_x=measurement_start_day" target="_blank">https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=web_connectivity&domain=twitter.com&since=<span class="gmail-il">2022</span>-03-06&until=<span class="gmail-il">2022</span>-04-06&axis_x=measurement_start_day</a><br><br>* Facebook: <a href="https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=web_connectivity&domain=www.facebook.com&since=2022-03-06&until=2022-04-06&axis_x=measurement_start_day" target="_blank">https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=web_connectivity&domain=www.facebook.com&since=<span class="gmail-il">2022</span>-03-06&until=<span class="gmail-il">2022</span>-04-06&axis_x=measurement_start_day</a><br><br>* Instagram: <a href="https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=web_connectivity&domain=www.instagram.com&since=2022-03-06&until=2022-04-06&axis_x=measurement_start_day" target="_blank">https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=web_connectivity&domain=www.instagram.com&since=<span class="gmail-il">2022</span>-03-06&until=<span class="gmail-il">2022</span>-04-06&axis_x=measurement_start_day</a><br><br>* Facebook Messenger: <a href="https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=facebook_messenger&since=2022-03-06&until=2022-04-06&axis_x=measurement_start_day" target="_blank">https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=facebook_messenger&since=<span class="gmail-il">2022</span>-03-06&until=<span class="gmail-il">2022</span>-04-06&axis_x=measurement_start_day</a><br><br>* Telegram: <a href="https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=telegram&since=2022-03-06&until=2022-04-06&axis_x=measurement_start_day" target="_blank">https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=telegram&since=<span class="gmail-il">2022</span>-03-06&until=<span class="gmail-il">2022</span>-04-06&axis_x=measurement_start_day</a><br><br>* WhatsApp: <a href="https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=whatsapp&since=2022-03-06&until=2022-04-06&axis_x=measurement_start_day" target="_blank">https://explorer.ooni.org/experimental/mat?probe_cc=LK&test_name=whatsapp&since=<span class="gmail-il">2022</span>-03-06&until=<span class="gmail-il">2022</span>-04-06&axis_x=measurement_start_day</a><br><br>By clicking <span class="gmail-il">on</span> each of these charts, the public can access the raw OONI measurement data, showing details of how the blocks were implemented and how they vary across ISPs <span class="gmail-il">in</span> the country. The links to the above charts are automatically updated with real-time OONI data.<br><br><b>##  Circumvention Tool Reachability Dashboard</b><br><br>We made some improvements to our new Circumvention Tool Reachability Dashboard, which presents OONI findings from the testing of censorship circumvention tools around the world (<a href="https://explorer.ooni.org/chart/circumvention" target="_blank">https://explorer.ooni.org/chart/circumvention</a>). <span class="gmail-il">In</span> particular, we added copy that highlights a limitation to the dashboard, while also encouraging users to refer to Tor Metrics and the Psiphon Data Engine (<a href="https://github.com/ooni/explorer/issues/726" target="_blank">https://github.com/ooni/explorer/issues/726</a>) to gain a more comprehensive understanding of whether circumvention tools work <span class="gmail-il">in</span> a country.  <br><br><b>## OONI Explorer network-centric views</b><br><br><span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, we worked <span class="gmail-il">on</span> implementing network-centric views for OONI Explorer (<a href="https://github.com/ooni/explorer/issues/744" target="_blank">https://github.com/ooni/explorer/issues/744</a>). The implementation (and subsequent review, feedback, and improvements) is available through the following pull request: <a href="https://github.com/ooni/explorer/pull/750" target="_blank">https://github.com/ooni/explorer/pull/750</a>  <br><br><b>## OONI Probe Mobile</b><br><br>We released OONI Probe iOS 3.6.0: <a href="https://github.com/ooni/probe-ios/releases/tag/v3.6.0" target="_blank">https://github.com/ooni/probe-ios/releases/tag/v3.6.0</a><br><br>This release includes the following improvements:<br>* New Tor Snowflake experiment<br>* New DNS Check experiment<br>* RiseupVPN test temporarily disabled<br>* Links to OONI blog posts and research reports<br>* User-initiated tests start off minimized<br>* Improved progress bar and test runtime counter<br>* Measurement engine synced with OONI Probe CLI 3.14<br>* Bug fixes and improvements<br><br>We followed-up with an OONI Probe iOS 3.6.1 release (<a href="https://github.com/ooni/probe-ios/releases/tag/v3.6.1" target="_blank">https://github.com/ooni/probe-ios/releases/tag/v3.6.1</a>) with bug fixes and improvements.<br><br>Notably, we set up a Huawei AppGallery account, where we released the OONI Probe Android app (<a href="https://appgallery.huawei.com/app/C105911849" target="_blank">https://appgallery.huawei.com/app/C105911849</a>).<br><br>We also worked <span class="gmail-il">on</span>:<br>* Adding support for sharing a link to the OONI Probe app (<a href="https://github.com/ooni/probe/issues/1997" target="_blank">https://github.com/ooni/probe/issues/1997</a>);<br>* Making the OONI Probe VPN check compatible with Netguard firewall (<a href="https://github.com/ooni/probe/issues/2039" target="_blank">https://github.com/ooni/probe/issues/2039</a>);<br>* Writing an internal design document for improving the architecture of OONI Probe apps for shared codebases;<br>* Adding support for paginating test results (<a href="https://github.com/ooni/probe/issues/1430" target="_blank">https://github.com/ooni/probe/issues/1430</a>);  <br>* Fixing a bug involving the re-run of failed tests (<a href="https://github.com/ooni/probe/issues/2048" target="_blank">https://github.com/ooni/probe/issues/2048</a>);<br>* Fixing a bug affecting a link <span class="gmail-il">on</span> the test details page (<a href="https://github.com/ooni/probe/issues/2075" target="_blank">https://github.com/ooni/probe/issues/2075</a>);<br>* Other improvements (<a href="https://github.com/ooni/probe/issues/1252" target="_blank">https://github.com/ooni/probe/issues/1252</a>, <a href="https://github.com/ooni/probe/issues/910" target="_blank">https://github.com/ooni/probe/issues/910</a>).<br><br><b>## Expanding censorship measurement methodologies</b><br><br>Our goal is to ensure that our new experiments (particularly Websteps, our new experiment for measuring website blocking) are effective <span class="gmail-il">in</span> some of the most censored environments and meet community needs. Following several rounds of community feedback, we developed our latest prototype (“Websteps winter edition”) <span class="gmail-il">in</span> March <span class="gmail-il">2022</span>.<br><br><span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, we started discussing the “Websteps winter edition” (<a href="https://github.com/bassosimone/websteps-illustrated/" target="_blank">https://github.com/bassosimone/websteps-illustrated/</a>) prototype with community members, we collected their feedback, and we drafted plans for incorporating changes developed <span class="gmail-il">in</span> this prototype inside of ooniprobe.<br><br>We also read the “Understanding the Practices of Global Censorship through<br>Accurate, End-to-End Measurements” paper (<a href="https://shhaos.github.io/papers/sigmetrics22.pdf" target="_blank">https://shhaos.github.io/papers/sigmetrics22.pdf</a>) and we started experimenting with its methodologies to understand how to integrate them into ooniprobe (<a href="https://github.com/bassosimone/websteps-illustrated/pull/2" target="_blank">https://github.com/bassosimone/websteps-illustrated/pull/2</a>).<br><br><b>## Building a web platform for updating test lists</b><br><br>We continued to make progress towards launching our new web platform for updating test lists (<a href="https://test-lists.ooni.org/" target="_blank">https://test-lists.ooni.org/</a>).<br><br>Specifically, we made improvements related to:<br>*  Validating the login form (<a href="https://github.com/ooni/test-lists-ui/pull/28" target="_blank">https://github.com/ooni/test-lists-ui/pull/28</a>);<br>*  Setting the default source field (<a href="https://github.com/ooni/test-lists-ui/pull/21" target="_blank">https://github.com/ooni/test-lists-ui/pull/21</a>);<br>*  Upgrading to the latest versions of next.js (<a href="https://github.com/ooni/test-lists-ui/pull/31" target="_blank">https://github.com/ooni/test-lists-ui/pull/31</a>).<br><br>We also discussed some approaches that would allow us to support multiple edits after the changes have been submitted, and we documented how this can be implemented <span class="gmail-il">in</span> the backend (<a href="https://github.com/ooni/backend/issues/588" target="_blank">https://github.com/ooni/backend/issues/588</a>).<br><br><b>## OONI backend<br><br>### Migration to the Clickhouse database</b><br><br>We continued to work <span class="gmail-il">on</span> various tasks related to the ongoing migration to an OLAP database that delivers much better performance and enables new functionalities like the MAT.<br>We migrated multiple API calls to the host running the new database and we improved monitoring. This is a long-running process.<br><br><b>### Reprocessing legacy measurements</b><br><br>OONI measurements collected before 2021 have been reprocessed to improve data quality and to ensure all measurements are now reachable from OONI Explorer. This is also a long-running process.<br><br><b>### URL prioritization</b><br><br>The "reactive" URL prioritization system is designed to ensure acceptable and fair coverage of URLs over time. But based <span class="gmail-il">on</span> community feedback (<a href="https://github.com/ooni/backend/issues/582" target="_blank">https://github.com/ooni/backend/issues/582</a>), we realized that the existing implementation could allow a manually-run probe to over-measure a given URL and prevent other probes from measuring this URL at all <span class="gmail-il">on</span> a national level. We therefore investigated how we can change the implementation of our URL prioritization algorithm to ensure that per-ASN testing coverage does not impact countrywide testing coverage of a URL. Based <span class="gmail-il">on</span> our research, we wrote an internal design document for improving our URL prioritization system.<br><br><b>### Other operations</b><br><br>We added support for STUN reachability tests <span class="gmail-il">in</span> the API search function. We improved NTP dashboards and monitoring, fixed IPv6 and ICMP filtering <span class="gmail-il">on</span> backend hosts, and we moved the test-helper rotation tool to use Debian 11 and fixed a bug. We also looked into the price/performance ratio <span class="gmail-il">on</span> new hosts.<br><br><b>## OONI data analysis tool</b><br><br>To enable the analysis of raw OONI measurements, we built a tool (“oonidata”) which supports downloading raw OONI data <span class="gmail-il">in</span> batch (<a href="https://github.com/ooni/backend/issues/581" target="_blank">https://github.com/ooni/backend/issues/581</a>). <span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, we published a version of oonidata <span class="gmail-il">on</span> pypi (<a href="https://pypi.org/project/oonidata/" target="_blank">https://pypi.org/project/oonidata/</a>).  <br><br><b>## Preparing a security audit</b><br><br>We aim to receive a security audit for several OONI software components: OONI API accounts, OONI Probe Web, OONI Probe engine. To this end, we coordinated with several security companies to discuss audit requirements and receive quotes.  <br><br><b>## Filmed OONI training course for Advocacy Assembly project</b><br><br><span class="gmail-il">In</span> previous months, we completed the creation of all materials for the online OONI training course for Small Media’s Advocacy Assembly project (<a href="https://www.advocacyassembly.org/" target="_blank">https://www.advocacyassembly.org/</a>).<br><br><span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, OONI’s Maria traveled to London to record 8 direct-to-camera videos at a studio (with Small Media staff) for the online OONI training course.<br><br><span class="gmail-il">In</span> particular, this involved the filming of the following videos:<br>* Introduction to course<br>* What is internet censorship?<br>* The problem of internet censorship<br>* What is OONI Probe?<br>* Interpreting OONI data<br>* What is OONI Explorer?<br>* Looking at OONI data <span class="gmail-il">in</span> aggregate<br>* Conclusion<br><br>Small Media aims to launch the online OONI training course over the next months.<br><br><b>## ISOC Pulse project <span class="gmail-il">on</span> Internet shutdowns</b><br><br>OONI is a data partner for the Internet Society (ISOC) Pulse project <span class="gmail-il">on</span> Internet shutdowns (<a href="https://pulse.internetsociety.org/partners" target="_blank">https://pulse.internetsociety.org/partners</a>). We aim to contribute OONI data (along with relevant charts and information) for all the “content blocking” events listed <span class="gmail-il">on</span> the ISOC Pulse shutdowns timeline (<a href="https://pulse.internetsociety.org/shutdowns" target="_blank">https://pulse.internetsociety.org/shutdowns</a>).<br><br>We created OONI reports (including OONI data, charts, and relevant interpretation of the findings) for the following 4 “content blocking” entries listed <span class="gmail-il">in</span> the ISOC Pulse shutdown timeline:<br><br>* April <span class="gmail-il">2022</span> - Sri Lanka (<a href="https://pulse.internetsociety.org/shutdowns/social-media-disruption-in-sri-lanka" target="_blank">https://pulse.internetsociety.org/shutdowns/social-media-disruption-<span class="gmail-il">in</span>-sri-lanka</a>)<br>* <span class="gmail-il">February</span> <span class="gmail-il">2022</span> - Russia (<a href="https://pulse.internetsociety.org/shutdowns/incremental-service-limitation-in-russia" target="_blank">https://pulse.internetsociety.org/shutdowns/incremental-service-limitation-<span class="gmail-il">in</span>-russia</a>)<br>* January <span class="gmail-il">2022</span> - Burkina Faso (<a href="https://pulse.internetsociety.org/shutdowns/second-shutdown-in-a-month-in-burkina-faso" target="_blank">https://pulse.internetsociety.org/shutdowns/second-shutdown-<span class="gmail-il">in</span>-a-month-<span class="gmail-il">in</span>-burkina-faso</a>)<br>* August 2021 - Zambia (<a href="https://pulse.internetsociety.org/shutdowns/social-media-limitations-in-zambia" target="_blank">https://pulse.internetsociety.org/shutdowns/social-media-limitations-<span class="gmail-il">in</span>-zambia</a>)<br><br>We shared our reports with ISOC to be listed under the “Data and Analysis” section of relevant ISOC Pulse shutdown entries.<br><b><br>## Report for Azerbaijan Internet Watch</b><br><br><span class="gmail-il">In</span> support of our partner, Azerbaijan Internet Watch (<a href="https://ooni.org/partners/azerbaijan-internet-watch/" target="_blank">https://ooni.org/partners/azerbaijan-internet-watch/</a>), we analyzed OONI measurements collected from Azerbaijan between January <span class="gmail-il">2022</span> to March <span class="gmail-il">2022</span>. Based <span class="gmail-il">on</span> our analysis, we produced charts and wrote a report interpreting the findings, which we shared with Azerbaijan Internet Watch.<br><br><b>## Test list updates</b><br><br><span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, we contributed a few updates to the Citizen Lab test lists (<a href="https://github.com/citizenlab/test-lists/pull/956" target="_blank">https://github.com/citizenlab/test-lists/pull/956</a>, <a href="https://github.com/citizenlab/test-lists/pull/962" target="_blank">https://github.com/citizenlab/test-lists/pull/962</a>, <a href="https://github.com/citizenlab/test-lists/pull/957" target="_blank">https://github.com/citizenlab/test-lists/pull/957</a>), and we reviewed and merged several test list pull requests opened by community members (<a href="https://github.com/citizenlab/test-lists/issues?page=3&q=is%3Aclosed" target="_blank">https://github.com/citizenlab/test-lists/issues?page=3&q=is%3Aclosed</a>).<br><br><b>## Job opening for bookkeeper</b><br><br><span class="gmail-il">In</span> collaboration with the Hermes Center (OONI’s current fiscal sponsor), we published a job opening for hiring a new bookkeeper: <a href="https://www.hermescenter.org/it/cerchiamo-un-una-consulente-contabile-e-amministrativo/" target="_blank">https://www.hermescenter.org/it/cerchiamo-un-una-consulente-contabile-e-amministrativo/</a><br><br>Throughout April <span class="gmail-il">2022</span>, we worked <span class="gmail-il">on</span> managing and reviewing applications, following up with candidates, and interviewing shortlisted candidates for the position.<br><br><b>## OONI featured <span class="gmail-il">in</span> Dataplane.org newsletter</b><br><br>OONI was among the measurement platforms (along with Censored Planet, RIPE Atlas, and NLNOG Ring) discussed <span class="gmail-il">in</span> Dataplane.org’s April <span class="gmail-il">2022</span> newsletter: <a href="https://dataplane.substack.com/p/sensor-strategy-monitoring-platforms" target="_blank">https://dataplane.substack.com/p/sensor-strategy-monitoring-platforms</a><br><b><br>## Notable community use of OONI Probe and OONI data<br><br>### Access Now’s 2021 Annual KeepItOn Report</b><br><br>Access Now published their 2021 Annual #KeepItOn campaign Report (“The Return Of Digital<br>Authoritarianism: Internet shutdowns <span class="gmail-il">in</span> 2021”): <a href="https://www.accessnow.org/cms/assets/uploads/2022/04/2021-KeepItOn-Report-1.pdf" target="_blank">https://www.accessnow.org/cms/assets/uploads/<span class="gmail-il">2022</span>/04/2021-KeepItOn-Report-1.pdf</a><br><br>This report makes use of OONI data, citing OONI research reports (<a href="https://ooni.org/reports" target="_blank">https://ooni.org/reports</a>)  and OONI data from OONI Explorer (<a href="https://explorer.ooni.org/" target="_blank">https://explorer.ooni.org/</a>).<br><br><b>### VEsinFiltro’s 2021 Annual Report</b><br><br><span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, our Venezuelan partner, VEsinFiltro, published their 2021 Annual Report <span class="gmail-il">on</span> digital rights and internet censorship <span class="gmail-il">in</span> Venezuela: <a href="https://vesinfiltro.com/noticias/2021_annual_report/" target="_blank">https://vesinfiltro.com/noticias/2021_annual_report/</a><br><br><span class="gmail-il">In</span> the Methodology section of their report, VEsinFiltro describe that they measured internet blocks <span class="gmail-il">in</span> Venezuela through the use of OONI Probe and OONI data.<br><br><b>## Community activities<br><br>### Mozilla Twitter Space <span class="gmail-il">on</span> network outages</b><br><br><span class="gmail-il">On</span> 5th April <span class="gmail-il">2022</span>, OONI’s Maria participated as a speaker <span class="gmail-il">on</span> Mozilla’s Twitter Space discussion <span class="gmail-il">on</span> network outages: <a href="https://twitter.com/mozilla/status/1511091238774190085" target="_blank">https://twitter.com/mozilla/status/1511091238774190085</a><br><br>As part of her participation, Maria explained OONI’s methods and discussed how OONI had previously analyzed Mozilla telemetry (<span class="gmail-il">in</span> collaboration with IODA) to investigate internet shutdowns (<a href="https://ooni.org/post/2021-investigating-internet-shutdowns-mozilla-telemetry/" target="_blank">https://ooni.org/post/2021-investigating-internet-shutdowns-mozilla-telemetry/</a>). The recording was available here: <a href="https://twitter.com/i/spaces/1MnxnkayOXEKO" target="_blank">https://twitter.com/i/spaces/1MnxnkayOXEKO</a><br><br><b>### OONI data analysis lecture for Georgia Tech students</b><br><br><span class="gmail-il">On</span> 12th April <span class="gmail-il">2022</span>, OONI’s Arturo was invited by IODA (<a href="https://ioda.inetintel.cc.gatech.edu/" target="_blank">https://ioda.inetintel.cc.gatech.edu/</a>) to give a lecture to Georgia Tech computer science students <span class="gmail-il">on</span> analyzing OONI data to investigate internet censorship. <span class="gmail-il">In</span> preparation for this lecture, Arturo prepared a Jupyter notebook with exercises for the students.<br><br><b>### OONI Community Meeting</b><br><br><span class="gmail-il">On</span> 19th April <span class="gmail-il">2022</span>, we hosted the monthly OONI Community Meeting <span class="gmail-il">on</span> our Slack channel (<a href="https://slack.ooni.org/" target="_blank">https://slack.ooni.org/</a>), during which we discussed the following topics:<br><br>1) New launch: OONI Measurement Aggregation Toolkit (MAT)<br><br>2) New test list web platform (<a href="https://test-lists.ooni.org/" target="_blank">https://test-lists.ooni.org/</a>): Community feedback and next steps  <br>3) Tweaking OONI’s URL prioritization algorithm to ensure counts per ASN (<a href="https://github.com/ooni/backend/issues/582" target="_blank">https://github.com/ooni/backend/issues/582</a>)<br><br>4) Inconsistent measurement counts returned by API endpoints (<a href="https://github.com/ooni/backend/issues/583" target="_blank">https://github.com/ooni/backend/issues/583</a>)  <br><br><b>## Userbase</b><br><br><span class="gmail-il">In</span> April <span class="gmail-il">2022</span>, 41,200,730 OONI Probe measurements were collected from 3,372 AS networks <span class="gmail-il">in</span> 162 countries around the world.<br><br>This information can also be found through our measurement stats <span class="gmail-il">on</span> OONI Explorer (see chart <span class="gmail-il">on</span> “monthly coverage worldwide”): <a href="https://explorer.ooni.org/" target="_blank">https://explorer.ooni.org/</a><br><br>~ OONI team.<br></div>