{"pdfpcFormat":1,"duration":45,"startTime":"45","savedSlide":0,"disableMarkdown":false,"noteFontSize":20,"pages":[{"idx":0,"label":"0","overlay":0,"note":" - good afternoon/morning all depending timezone\n - next 45min my phd work entitled ...\n - want to start by convincing you that privacy is important"},{"idx":1,"label":"1","overlay":0,"note":" - often people say nothing to hide\n - not the point, example fb ca\n   - 2014: quizz collect info you+friend\n   - 2016: targeted ad us-elections & more\n   - 2018: facebook ceo us congress \n - 3 pts: collection, reuse, influence\n - nothing with hiding something wrong"},{"idx":2,"label":"2","overlay":0,"note":" - not isolated case"},{"idx":3,"label":"3","overlay":0,"note":"- why so many privacy issues?\n- because infra\n- encryption not enough: protect content\n- who, when, how often, with whom is enough\n- say a lot about you\n- can we fix the internet?"},{"idx":4,"label":"4","overlay":0,"note":"- not easily but build overlays\n- providers see only anon net\n- not a new concept: 1981\n- read definition\n- most well-known: tor\n- 2M+ -> why not more? "},{"idx":5,"label":"5","overlay":0,"note":"- naive speed test\n- my browser + tor browser\n- low bandwidth\n- high latency\n- ok for web browsing\n- not ok for many other things\n- not cover all usages\n- can we improve perf?"},{"idx":6,"label":"6","overlay":0,"note":"- 2 about improving perf. OR\n- 1 about improving group coms \n - time reason\n- about onion routing\n- one to enable voice calling\n- another one for file transfer\n- let's start with voice calling"},{"idx":7,"label":"6","overlay":1,"note":" - voip requires stable low\n - need to understand exact requirements"},{"idx":8,"label":"7","overlay":0,"note":"  - requirements derived from ITU\n  - international telecomunication union\n  - delay -> too important, walkie talkie mode, hard to discuss\n - dropped calls -> no one like to be interrupted\n - how long does a call last, important for testing\n - privacy for everyone : 2 way anonymity"},{"idx":9,"label":"8","overlay":0,"note":" - 2 way anon -> onion service\n - tor defaults are considered secure\n - tor 3 hop circuits, onion service connects 2 circuits, 6 relays\n - many properties are kept reducing circuits to 2 hops\n - already discussed, we consider both\n - user trade off security / performance  "},{"idx":10,"label":"9","overlay":0,"note":" - preliminary analysis\n - we have defined 2 config for tor\n - run 5 minutes and 90 minutes\n - each couple repeated 64 times for variabality\n - 3 questions"},{"idx":11,"label":"10","overlay":0,"note":"- privacy-first conf\n- ECDF, x, y, bar. \n- left bar = ok\n- right = not ok"},{"idx":12,"label":"11","overlay":0,"note":"- performance-first conf\n- way better\n- far from enjoyable calls: 1 call over 2 "},{"idx":13,"label":"12","overlay":0,"note":"  - build abstraction of circuits with lat spikes?\n  - without modifying tor\n  - readily available\n  - we tried!\n"},{"idx":14,"label":"13","overlay":0,"note":"- describe graph\n- median and small percentiles are OK most circuits\n- but there is no stable circuit with low maximum latency\n- spikes\n- can we still use Tor's circuits for voice calling?"},{"idx":15,"label":"14","overlay":0,"note":""},{"idx":16,"label":"15","overlay":0,"note":""},{"idx":17,"label":"16","overlay":0,"note":""},{"idx":18,"label":"17","overlay":0,"note":""},{"idx":19,"label":"18","overlay":0,"note":""},{"idx":20,"label":"18","overlay":1,"note":""}]}