Measuring Internet filters and their unexpected impact Leonid - - PowerPoint PPT Presentation

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Jul 14, 2023 17 likes •327 views

Measuring Internet filters and their unexpected impact Leonid Evdokimov nullcon, Goa, March 2018 WHAT IS I N T E R N E T C E N S O R S H I P? Internet Censorship |ntnt snsrp| 1. a distortion of the reality of the Internet

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Measuring Internet filters

and their unexpected impact

Leonid Evdokimov nullcon, Goa, March 2018

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WHAT IS

I N T E R N E T C E N S O R S H I P?

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Internet Censorship |ˈɪntənɛt sɛnsərʃɪp|

1. a distortion of the reality of the Internet created by those in

power.

2. another term for FILTERNET.

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The Open Observatory of Network Interference

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OONI IS

OPEN METHODOLOGIES

OPEN SOURCE SOFTWARE

OPEN DATA

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Blocked domains in Iran

From 2014 to 2017

2 4 6 8 1 1 2 1 4 Economics Gaming Hate speech Environment E-commerce Militants and terrorists Public health Search engines Communication tools Hacking tools Government File-sharing Hosting and blogging platforms Sex education Online dating Alcohol and drugs Provocative attire Social networking Gambling Media sharing Religion Anonymity and circumvention tools LGBT Pornography Political criticism Culture Human rights issues News media 121 109 101 82 62 46 44 37 35 30 26 24 21 18 17 16 15 12 10 10 8 8 8 7 6 5 4 4

September 2017

oni.torproject.org/post/iran-internet-censorship

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At least 25 websites related to the Catalonia Independence Referendum were blocked. The .cat registry was raided and forced to take down many websites.

Spain

October 2017

oni.torproject.org/post/internet-censorship-catalonia-

independence-referendum

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November 2017

oni.torproject.org/post/not-quite-network-censorship

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twitter.com/statuses/948320651407962112

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O O N I S O F T W A R E E C O S Y S T E M

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OONI Software tests

Web Censorship Instant Messaging Apps Censorship Circumvention Middleboxes Speed & Performance

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Android iOS macOS Linux

MEASUREMENT APP FOR

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https://run.ooni.io

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O P E N D ATA

Provides evidence of censorship events Allows researchers to conduct independent studies & to explore other research questions Allows the public to verify our findings

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https://explorer.ooni.io

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https://api.ooni.io

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G O R A W !

Mining OONI data

oni.torproject.org/post/mining-ooni-data

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What's wrong with

I N T E R N E T C E N S O R S H I P?

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HTTPS throttled, AlexaTop50 adult websites serving malware. Users complaining for months. Unauthorised access? Corrupt sysadmin?

Egypt

Autumn 2016

oni.torproject.org/post/egypt-network-interference

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October 2016

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Prosecutor's experts try to ban gambling app endpoints Probably, enumerating them with network sniffer… Digicert OCSP responders are gone Chrome and Firefox lag, Safari can't access wikipedia & facebook at all October 2016

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June 2017

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Hacktivists added some IPs from MSK-IX-NET as A records of blacklisted domain Filtering /32 routes appeared at borders… 8% of traffic is gone June 2017

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Geoff Huston, APNIC Labs

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~600 domains for "entity" like Grani, BaltBet or ZenitBet (or ~3900 available expired domains per Phil Kulin's stats) × 4093 A DNS RRs per domain name ≈ 2.5M /32 routes in RIB and, maybe, TCAM

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OONI IS

OPEN METHODOLOGIES

OPEN SOURCE SOFTWARE

OPEN DATA

LOTS OF FUN!

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L E A R N M O R E

oni.torproject.org

api.ooni.io explorer.ooni.io

Contacts

slack.openobservatory.org contact@openobservatory.org