{"id":"https://openalex.org/W2907949471","doi":"https://doi.org/10.2478/popets-2019-0012","title":"<i>Lethe</i>: Conceal Content Deletion from Persistent Observers","display_name":"<i>Lethe</i>: Conceal Content Deletion from Persistent Observers","publication_year":2018,"publication_date":"2018-12-24","ids":{"openalex":"https://openalex.org/W2907949471","doi":"https://doi.org/10.2478/popets-2019-0012","mag":"2907949471"},"language":"en","primary_location":{"id":"doi:10.2478/popets-2019-0012","is_oa":true,"landing_page_url":"https://doi.org/10.2478/popets-2019-0012","pdf_url":"https://content.sciendo.com/downloadpdf/journals/popets/2019/1/article-p206.pdf","source":{"id":"https://openalex.org/S4210183172","display_name":"Proceedings on Privacy Enhancing Technologies","issn_l":"2299-0984","issn":["2299-0984"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320322","host_organization_name":"De Gruyter Open","host_organization_lineage":["https://openalex.org/P4310320322","https://openalex.org/P4310313990"],"host_organization_lineage_names":["De Gruyter Open","De Gruyter"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings on Privacy Enhancing Technologies","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://content.sciendo.com/downloadpdf/journals/popets/2019/1/article-p206.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5044008734","display_name":"Mohsen Minaei","orcid":"https://orcid.org/0009-0001-3899-697X"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mohsen Minaei","raw_affiliation_strings":["Purdue University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Purdue University","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002813297","display_name":"Mainack Mondal","orcid":"https://orcid.org/0000-0003-4317-0184"},"institutions":[{"id":"https://openalex.org/I40347166","display_name":"University of Chicago","ror":"https://ror.org/024mw5h28","country_code":"US","type":"education","lineage":["https://openalex.org/I40347166"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mainack Mondal","raw_affiliation_strings":["University of Chicago ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Chicago ,","institution_ids":["https://openalex.org/I40347166"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077502412","display_name":"Patrick Loiseau","orcid":"https://orcid.org/0000-0003-0674-3369"},"institutions":[{"id":"https://openalex.org/I106785703","display_name":"Institut polytechnique de Grenoble","ror":"https://ror.org/05sbt2524","country_code":"FR","type":"education","lineage":["https://openalex.org/I106785703","https://openalex.org/I899635006"]},{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I4210101348","display_name":"Centre Inria de l'Universit\u00e9 Grenoble Alpes","ror":"https://ror.org/00n8d6z93","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1326498283","https://openalex.org/I4210101348"]},{"id":"https://openalex.org/I4210104430","display_name":"Laboratoire d'Informatique de Grenoble","ror":"https://ror.org/01c8rcg82","country_code":"FR","type":"facility","lineage":["https://openalex.org/I106785703","https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1326498283","https://openalex.org/I4210104430","https://openalex.org/I4210159245","https://openalex.org/I899635006","https://openalex.org/I899635006"]},{"id":"https://openalex.org/I899635006","display_name":"Universit\u00e9 Grenoble Alpes","ror":"https://ror.org/02rx3b187","country_code":"FR","type":"education","lineage":["https://openalex.org/I899635006"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Patrick Loiseau","raw_affiliation_strings":["Univ. Grenoble Alpes , CNRS, Inria, Grenoble INP, LIG & MPI-SWS"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Univ. Grenoble Alpes , CNRS, Inria, Grenoble INP, LIG & MPI-SWS","institution_ids":["https://openalex.org/I4210101348","https://openalex.org/I1294671590","https://openalex.org/I106785703","https://openalex.org/I4210104430","https://openalex.org/I899635006"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067688305","display_name":"Krishna P. Gummadi","orcid":"https://orcid.org/0000-0003-1256-8800"},"institutions":[{"id":"https://openalex.org/I4210121786","display_name":"Max Planck Institute for Software Systems","ror":"https://ror.org/02pe2kf23","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210121786"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Krishna Gummadi","raw_affiliation_strings":["MPI-SWS"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"MPI-SWS","institution_ids":["https://openalex.org/I4210121786"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5033338045","display_name":"Aniket Kate","orcid":"https://orcid.org/0000-0003-2246-8416"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Aniket Kate","raw_affiliation_strings":["Purdue University ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Purdue University ,","institution_ids":["https://openalex.org/I219193219"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":3.6136,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.93965448,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"2019","issue":"1","first_page":"206","last_page":"226"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11045","display_name":"Privacy, Security, and Data Protection","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11045","display_name":"Privacy, Security, and Data Protection","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11644","display_name":"Spam and Phishing Detection","score":0.9986000061035156,"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/T11598","display_name":"Internet Traffic Analysis and Secure E-voting","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/internet-privacy","display_name":"Internet privacy","score":0.7347168326377869},{"id":"https://openalex.org/keywords/adversarial-system","display_name":"Adversarial system","score":0.6989259719848633},{"id":"https://openalex.org/keywords/right-to-be-forgotten","display_name":"Right to be forgotten","score":0.6811767220497131},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6005340814590454},{"id":"https://openalex.org/keywords/dilemma","display_name":"Dilemma","score":0.5571119785308838},{"id":"https://openalex.org/keywords/forgetting","display_name":"Forgetting","score":0.5362040400505066},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.505003035068512},{"id":"https://openalex.org/keywords/social-media","display_name":"Social media","score":0.487600713968277},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.4439549446105957},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.36355555057525635},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.29918819665908813},{"id":"https://openalex.org/keywords/psychology","display_name":"Psychology","score":0.27514418959617615},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.19608718156814575},{"id":"https://openalex.org/keywords/data-protection-act-1998","display_name":"Data Protection Act 1998","score":0.15015754103660583},{"id":"https://openalex.org/keywords/cognitive-psychology","display_name":"Cognitive psychology","score":0.0941402018070221}],"concepts":[{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.7347168326377869},{"id":"https://openalex.org/C37736160","wikidata":"https://www.wikidata.org/wiki/Q1801315","display_name":"Adversarial system","level":2,"score":0.6989259719848633},{"id":"https://openalex.org/C2778099626","wikidata":"https://www.wikidata.org/wiki/Q2961237","display_name":"Right to be forgotten","level":3,"score":0.6811767220497131},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6005340814590454},{"id":"https://openalex.org/C2778496695","wikidata":"https://www.wikidata.org/wiki/Q254128","display_name":"Dilemma","level":2,"score":0.5571119785308838},{"id":"https://openalex.org/C7149132","wikidata":"https://www.wikidata.org/wiki/Q1377840","display_name":"Forgetting","level":2,"score":0.5362040400505066},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.505003035068512},{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.487600713968277},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.4439549446105957},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.36355555057525635},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.29918819665908813},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.27514418959617615},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.19608718156814575},{"id":"https://openalex.org/C69360830","wikidata":"https://www.wikidata.org/wiki/Q1172237","display_name":"Data Protection Act 1998","level":2,"score":0.15015754103660583},{"id":"https://openalex.org/C180747234","wikidata":"https://www.wikidata.org/wiki/Q23373","display_name":"Cognitive psychology","level":1,"score":0.0941402018070221},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.2478/popets-2019-0012","is_oa":true,"landing_page_url":"https://doi.org/10.2478/popets-2019-0012","pdf_url":"https://content.sciendo.com/downloadpdf/journals/popets/2019/1/article-p206.pdf","source":{"id":"https://openalex.org/S4210183172","display_name":"Proceedings on Privacy Enhancing Technologies","issn_l":"2299-0984","issn":["2299-0984"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320322","host_organization_name":"De Gruyter Open","host_organization_lineage":["https://openalex.org/P4310320322","https://openalex.org/P4310313990"],"host_organization_lineage_names":["De Gruyter Open","De Gruyter"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings on Privacy Enhancing Technologies","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:17cebbe9dd2948d286d5e47490b21c80","is_oa":false,"landing_page_url":"https://doaj.org/article/17cebbe9dd2948d286d5e47490b21c80","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Proceedings on Privacy Enhancing Technologies, Vol 2019, Iss 1, Pp 206-226 (2019)","raw_type":"article"},{"id":"pmh:oai:pure.mpg.de:item_3218003","is_oa":true,"landing_page_url":"http://hdl.handle.net/21.11116/0000-0005-FE39-E","pdf_url":null,"source":{"id":"https://openalex.org/S4306400654","display_name":"MPG.PuRe (Max Planck Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I149899117","host_organization_name":"Max Planck Society","host_organization_lineage":["https://openalex.org/I149899117"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Proceedings on Privacy Enhancing Technologies","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"doi:10.2478/popets-2019-0012","is_oa":true,"landing_page_url":"https://doi.org/10.2478/popets-2019-0012","pdf_url":"https://content.sciendo.com/downloadpdf/journals/popets/2019/1/article-p206.pdf","source":{"id":"https://openalex.org/S4210183172","display_name":"Proceedings on Privacy Enhancing Technologies","issn_l":"2299-0984","issn":["2299-0984"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320322","host_organization_name":"De Gruyter Open","host_organization_lineage":["https://openalex.org/P4310320322","https://openalex.org/P4310313990"],"host_organization_lineage_names":["De Gruyter Open","De Gruyter"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings on Privacy Enhancing Technologies","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.7400000095367432,"display_name":"Reduced inequalities","id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W89909919","https://openalex.org/W157207381","https://openalex.org/W1572247238","https://openalex.org/W1974646930","https://openalex.org/W1977246486","https://openalex.org/W1981645457","https://openalex.org/W1992074691","https://openalex.org/W2001653897","https://openalex.org/W2025636081","https://openalex.org/W2032695641","https://openalex.org/W2070246651","https://openalex.org/W2144687488","https://openalex.org/W2287254981","https://openalex.org/W2297172309","https://openalex.org/W2416572683","https://openalex.org/W2483058737","https://openalex.org/W2596413131","https://openalex.org/W2759501600","https://openalex.org/W2907609469","https://openalex.org/W2911978475","https://openalex.org/W2949439273"],"related_works":["https://openalex.org/W4289718052","https://openalex.org/W2502115930","https://openalex.org/W2164121020","https://openalex.org/W2145559838","https://openalex.org/W3116498279","https://openalex.org/W4287549553","https://openalex.org/W4246396837","https://openalex.org/W3176240006","https://openalex.org/W3126451824","https://openalex.org/W2110053226"],"abstract_inverted_index":{"Abstract":[0],"Most":[1],"social":[2,85,121],"platforms":[3,122],"offer":[4],"mechanisms":[5],"allowing":[6],"users":[7,17,52,243],"to":[8,21,28,31,44,55,64,110,125,142,213,247,261,271,292],"delete":[9],"their":[10,58,66,245],"posts,":[11],"and":[12,194,209,223,236,287],"a":[13,70,107,135,182,230],"significant":[14],"fraction":[15],"of":[16,93,100,113,131,151,185,196,225,277],"exercise":[18],"this":[19,111],"right":[20,246],"be":[22],"forgotten.":[23,117],"However,":[24],"ironically,":[25],"users\u2019":[26,205],"attempt":[27],"reduce":[29],"attention":[30,40],"sensitive":[32],"posts":[33,67,133,145,161],"via":[34],"deletion,":[35,278],"in":[36,60,239],"practice,":[37],"attracts":[38],"unwanted":[39],"from":[41,274],"stalkers":[42],"specifically":[43],"those":[45],"(deleted)":[46],"posts.":[47,189,227],"Thus,":[48],"deletions":[49],"may":[50],"leave":[51],"more":[53],"vulnerable":[54],"attacks":[56],"on":[57],"privacy":[59,141,268],"general.":[61],"Users":[62],"hoping":[63],"make":[65],"forgotten":[68],"face":[69],"\u201cdamned":[71],"if":[72,76,159],"I":[73,77],"do,":[74],"damned":[75],"don\u2019t\u201d":[78],"dilemma.":[79],"Many":[80],"are":[81,123,162],"shifting":[82],"towards":[83],"ephemeral":[84],"platform":[86],"like":[87],"Snapchat,":[88],"which":[89],"will":[90],"deprive":[91],"us":[92],"important":[94],"user-data":[95],"archival.":[96],"In":[97,149],"the":[98,116,119,128,143,173,176,192,262,275,289],"form":[99],"intermittent":[101],"withdrawals,":[102],"we":[103,199],"present,":[104],"Lethe":[105,139,152,170,197,265],",":[106,153,198],"novel":[108],"solution":[109],"problem":[112],"(really)":[114],"forgetting":[115],"If":[118],"next-generation":[120],"willing":[124],"give":[126],"up":[127,270],"uninterrupted":[129,259],"availability":[130,235,282],"non-deleted":[132,226],"by":[134,169,181],"very":[136],"small":[137],"fraction,":[138],"provides":[140],"deleted":[144,164],"over":[146,207],"long":[147],"durations.":[148],"presence":[150],"an":[154,254,258],"adversarial":[155,177,237,290],"observer":[156,178],"becomes":[157],"unsure":[158],"some":[160],"permanently":[163],"or":[165],"just":[166],"temporarily":[167],"withdrawn":[168],";":[171],"at":[172],"same":[174],"time,":[175],"is":[179],"overwhelmed":[180],"large":[183],"number":[184],"falsely":[186],"flagged":[187],"undeleted":[188],"To":[190],"demonstrate":[191],"feasibility":[193],"performance":[195],"analyze":[200],"large-scale":[201],"real":[202],"data":[203],"about":[204],"deletion":[206,267],"Twitter":[208],"thoroughly":[210],"investigate":[211],"how":[212],"choose":[214],"time":[215,276],"duration":[216],"distributions":[217],"for":[218,242,269],"alternating":[219],"between":[220,233],"temporary":[221],"withdrawals":[222],"resurrections":[224],"We":[228,249],"find":[229],"favorable":[231],"trade-off":[232],"privacy,":[234],"overhead":[238],"different":[240],"settings":[241],"exercising":[244],"delete.":[248],"show":[250],"that,":[251],"even":[252],"against":[253],"ultimate":[255],"adversary":[256],"with":[257],"access":[260],"entire":[263],"platform,":[264],"offers":[266],"3":[272],"months":[273],"while":[279],"maintaining":[280],"content":[281],"as":[283,285],"high":[284],"95%":[286],"keeping":[288],"precision":[291],"20%.":[293]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}