{"id":"https://openalex.org/W2014067678","doi":"https://doi.org/10.1145/2714576.2714634","title":"I Know Where You are","display_name":"I Know Where You are","publication_year":2015,"publication_date":"2015-04-03","ids":{"openalex":"https://openalex.org/W2014067678","doi":"https://doi.org/10.1145/2714576.2714634","mag":"2014067678"},"language":"en","primary_location":{"id":"doi:10.1145/2714576.2714634","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2714576.2714634","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 10th ACM Symposium on Information, Computer and Communications Security","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5000013428","display_name":"Markus Miettinen","orcid":"https://orcid.org/0000-0002-5861-8829"},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technical University of Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Markus Miettinen","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016685507","display_name":"N. Asokan","orcid":"https://orcid.org/0000-0002-5093-9871"},"institutions":[{"id":"https://openalex.org/I133731052","display_name":"University of Helsinki","ror":"https://ror.org/040af2s02","country_code":"FI","type":"education","lineage":["https://openalex.org/I133731052"]},{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"N. Asokan","raw_affiliation_strings":["Aalto University and University of Helsinki, Espoo and Helsinki, Finland","Aalto University & University of Helsinki, Espoo and Helsinki, Finland#TAB#"],"affiliations":[{"raw_affiliation_string":"Aalto University and University of Helsinki, Espoo and Helsinki, Finland","institution_ids":["https://openalex.org/I9927081","https://openalex.org/I133731052"]},{"raw_affiliation_string":"Aalto University & University of Helsinki, Espoo and Helsinki, Finland#TAB#","institution_ids":["https://openalex.org/I133731052"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019931011","display_name":"Farinaz Koushanfar","orcid":"https://orcid.org/0000-0003-0798-3794"},"institutions":[{"id":"https://openalex.org/I74775410","display_name":"Rice University","ror":"https://ror.org/008zs3103","country_code":"US","type":"education","lineage":["https://openalex.org/I74775410"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Farinaz Koushanfar","raw_affiliation_strings":["Rice University, Houston, TX, USA","Rice Univ., Houston, TX, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Rice University, Houston, TX, USA","institution_ids":["https://openalex.org/I74775410"]},{"raw_affiliation_string":"Rice Univ., Houston, TX, USA#TAB#","institution_ids":["https://openalex.org/I74775410"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067468039","display_name":"Thien Duc Nguyen","orcid":"https://orcid.org/0000-0002-8889-0903"},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technical University of Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Thien Duc Nguyen","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042529487","display_name":"Jon Rios","orcid":null},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technical University of Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Jon Rios","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079497016","display_name":"Ahmad\u2010Reza Sadeghi","orcid":"https://orcid.org/0000-0001-6833-3598"},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technical University of Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Ahmad-Reza Sadeghi","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062267849","display_name":"Majid Sobhani","orcid":null},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technical University of Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Majid Sobhani","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083723414","display_name":"Sudha Yellapantula","orcid":null},"institutions":[{"id":"https://openalex.org/I74775410","display_name":"Rice University","ror":"https://ror.org/008zs3103","country_code":"US","type":"education","lineage":["https://openalex.org/I74775410"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sudha Yellapantula","raw_affiliation_strings":["Rice University, Houston, TX, USA","Rice Univ., Houston, TX, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Rice University, Houston, TX, USA","institution_ids":["https://openalex.org/I74775410"]},{"raw_affiliation_string":"Rice Univ., Houston, TX, USA#TAB#","institution_ids":["https://openalex.org/I74775410"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5000013428"],"corresponding_institution_ids":["https://openalex.org/I31512782"],"apc_list":null,"apc_paid":null,"fwci":11.0625363,"has_fulltext":false,"cited_by_count":24,"citation_normalized_percentile":{"value":0.98168773,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"567","last_page":"577"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11800","display_name":"User Authentication and Security Systems","score":0.9979000091552734,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11800","display_name":"User Authentication and Security Systems","score":0.9979000091552734,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12801","display_name":"Bluetooth and Wireless Communication Technologies","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10761","display_name":"Vehicular Ad Hoc Networks (VANETs)","score":0.9932000041007996,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8034073710441589},{"id":"https://openalex.org/keywords/modalities","display_name":"Modalities","score":0.7373377084732056},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5888413190841675},{"id":"https://openalex.org/keywords/entropy","display_name":"Entropy (arrow of time)","score":0.5462678074836731},{"id":"https://openalex.org/keywords/mathematical-proof","display_name":"Mathematical proof","score":0.44641175866127014},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.43836769461631775},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.3533216416835785},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.3373228907585144},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.08054974675178528},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.07553279399871826}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8034073710441589},{"id":"https://openalex.org/C2779903281","wikidata":"https://www.wikidata.org/wiki/Q6888026","display_name":"Modalities","level":2,"score":0.7373377084732056},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5888413190841675},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.5462678074836731},{"id":"https://openalex.org/C108710211","wikidata":"https://www.wikidata.org/wiki/Q11538","display_name":"Mathematical proof","level":2,"score":0.44641175866127014},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.43836769461631775},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.3533216416835785},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.3373228907585144},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.08054974675178528},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.07553279399871826},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0},{"id":"https://openalex.org/C36289849","wikidata":"https://www.wikidata.org/wiki/Q34749","display_name":"Social science","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2714576.2714634","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2714576.2714634","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 10th ACM Symposium on Information, Computer and Communications Security","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W19763141","https://openalex.org/W30726166","https://openalex.org/W32836451","https://openalex.org/W356286598","https://openalex.org/W1541380988","https://openalex.org/W1553696291","https://openalex.org/W1971520550","https://openalex.org/W2022423863","https://openalex.org/W2054706300","https://openalex.org/W2087355434","https://openalex.org/W2108836391","https://openalex.org/W2130135255","https://openalex.org/W2133990480","https://openalex.org/W2139223971","https://openalex.org/W2151993488","https://openalex.org/W2394957549","https://openalex.org/W4241406615"],"related_works":["https://openalex.org/W4394650907","https://openalex.org/W4254119641","https://openalex.org/W3196207352","https://openalex.org/W2951724202","https://openalex.org/W3084261076","https://openalex.org/W2576399385","https://openalex.org/W2963408011","https://openalex.org/W4236324517","https://openalex.org/W1586813864","https://openalex.org/W2184046398"],"abstract_inverted_index":{"In":[0],"the":[1,16,22,32,93,134],"recent":[2],"years,":[3],"new":[4],"services":[5,10],"and":[6,123],"businesses":[7],"leveraging":[8],"location-based":[9],"(LBS)":[11],"are":[12,62,140],"rapidly":[13],"emerging.":[14],"On":[15],"other":[17,109,152],"hand":[18],"this":[19,59],"has":[20],"raised":[21],"incentive":[23],"of":[24,50,95,117,129],"users":[25],"to":[26,31,47,64,72,100,105,136,142,157],"cheat":[27],"about":[28],"their":[29],"locations":[30],"service":[33],"providers":[34],"for":[35,80],"personal":[36],"benefits.":[37],"Context-based":[38],"proofs-of-presence":[39],"(PoPs)":[40],"have":[41],"been":[42],"proposed":[43],"as":[44,55],"a":[45],"means":[46],"enable":[48],"verification":[49],"users'":[51],"location":[52],"claims.":[53],"However,":[54],"we":[56,75],"show":[57],"in":[58,98,148,150],"paper,":[60],"they":[61],"vulnerable":[63,104],"context":[65,102,135,153],"guessing":[66],"attacks.":[67,107],"To":[68],"make":[69],"PoPs":[70,97,138],"resilient":[71],"malicious":[73],"provers":[74],"propose":[76],"two":[77],"complementary":[78],"approaches":[79],"making":[81],"context-based":[82],"PoPs:":[83],"one":[84],"approach":[85,110],"focuses":[86],"on":[87,91,113],"surprisal":[88],"filtering":[89],"based":[90,112],"estimating":[92],"entropy":[94,132],"particular":[96],"order":[99],"detect":[101],"measurements":[103],"such":[106],"The":[108],"is":[111,127],"utilizing":[114],"longitudinal":[115],"observations":[116],"ambient":[118,124],"modalities":[119,155],"like":[120],"noise":[121],"level":[122],"luminosity.":[125],"It":[126],"capable":[128],"extracting":[130],"more":[131],"from":[133],"construct":[137],"that":[139],"hard":[141],"guess":[143],"by":[144],"an":[145],"attacker":[146],"even":[147],"situations":[149],"which":[151],"sensor":[154],"fail":[156],"provide":[158],"reliable":[159],"PoPs.":[160]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":6},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":2}],"updated_date":"2026-02-15T07:36:51.736424","created_date":"2025-10-10T00:00:00"}