{"id":1630,"date":"2026-03-02T12:12:27","date_gmt":"2026-03-02T12:12:27","guid":{"rendered":"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/"},"modified":"2026-03-02T12:12:27","modified_gmt":"2026-03-02T12:12:27","slug":"llm-assisted-deanonymization","status":"publish","type":"post","link":"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/","title":{"rendered":"LLM-Assisted Deanonymization"},"content":{"rendered":"<div>\n<p>Turns out that LLMs are <a href=\"https:\/\/simonlermen.substack.com\/p\/large-scale-online-deanonymization\">good<\/a> at de-anonymization:<\/p>\n<blockquote>\n<p>We show that LLM agents can figure out who you are from your anonymous online posts. Across Hacker News, Reddit, LinkedIn, and anonymized interview transcripts, our method identifies users with high precision \u00ad and scales to tens of thousands of candidates.<\/p>\n<p>While it has been known that individuals can be uniquely identified by surprisingly few attributes, this was often practically limited. Data is often only available in unstructured form and deanonymization used to require human investigators to search and reason based on clues. We show that from a handful of comments, LLMs can infer where you live, what you do, and your interests\u2014then search for you on the web. In our new research, we show that this is not only possible but increasingly practical.<\/p>\n<\/blockquote>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Turns out that LLMs are good at de-anonymization: We show that LLM agents can figure out who you are from your anonymous online posts. Across Hacker News, Reddit, LinkedIn, and anonymized interview transcripts, our method identifies users with high precision \u00ad and scales to tens of thousands of candidates. While it has been known that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-container-style":"default","site-container-layout":"default","site-sidebar-layout":"default","disable-article-header":"default","disable-site-header":"default","disable-site-footer":"default","disable-content-area-spacing":"default","footnotes":""},"categories":[733,90,734,210,53],"tags":[91],"class_list":["post-1630","post","type-post","status-publish","format-standard","hentry","category-anonymity","category-cybersecurity","category-de-anonymization","category-llm","category-uncategorized","tag-cybersecurity"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>LLM-Assisted Deanonymization - Imperative Business Ventures Limited<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LLM-Assisted Deanonymization - Imperative Business Ventures Limited\" \/>\n<meta property=\"og:description\" content=\"Turns out that LLMs are good at de-anonymization: We show that LLM agents can figure out who you are from your anonymous online posts. Across Hacker News, Reddit, LinkedIn, and anonymized interview transcripts, our method identifies users with high precision \u00ad and scales to tens of thousands of candidates. While it has been known that [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\" \/>\n<meta property=\"og:site_name\" content=\"Imperative Business Ventures Limited\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-02T12:12:27+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/blog.ibvl.in\/#\/schema\/person\/55b87b72a56b1bbe9295fe5ef7a20b02\"},\"headline\":\"LLM-Assisted Deanonymization\",\"datePublished\":\"2026-03-02T12:12:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\"},\"wordCount\":134,\"keywords\":[\"Cybersecurity\"],\"articleSection\":[\"anonymity\",\"Cybersecurity\",\"de-anonymization\",\"LLM\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\",\"url\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\",\"name\":\"LLM-Assisted Deanonymization - Imperative Business Ventures Limited\",\"isPartOf\":{\"@id\":\"https:\/\/blog.ibvl.in\/#website\"},\"datePublished\":\"2026-03-02T12:12:27+00:00\",\"author\":{\"@id\":\"https:\/\/blog.ibvl.in\/#\/schema\/person\/55b87b72a56b1bbe9295fe5ef7a20b02\"},\"breadcrumb\":{\"@id\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blog.ibvl.in\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"LLM-Assisted Deanonymization\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.ibvl.in\/#website\",\"url\":\"https:\/\/blog.ibvl.in\/\",\"name\":\"Imperative Business Ventures Limited\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.ibvl.in\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blog.ibvl.in\/#\/schema\/person\/55b87b72a56b1bbe9295fe5ef7a20b02\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.ibvl.in\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/4d20b2cd313e4417a599678e950e6fb7d4dfa178a72f2b769335a08aaa615aa9?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/4d20b2cd313e4417a599678e950e6fb7d4dfa178a72f2b769335a08aaa615aa9?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\/\/blog.ibvl.in\"],\"url\":\"https:\/\/blog.ibvl.in\/index.php\/author\/admin_hcbs9yw6\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"LLM-Assisted Deanonymization - Imperative Business Ventures Limited","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blog.ibvl.in\/index.php\/2026\/03\/02\/llm-assisted-deanonymization\/","og_locale":"en_US","og_type":"article","og_title":"LLM-Assisted Deanonymization - Imperative Business Ventures Limited","og_description":"Turns out that LLMs are good at de-anonymization: We show that LLM agents can figure out who you are from your anonymous online posts. 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