Cambridge, Massachusetts, United States
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About
Activity
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Here's my 8.5 hour conversation with Elon Musk & the Neuralink team. It is the longest podcast I've ever done! 🤯 It's a fascinating, super…
Here's my 8.5 hour conversation with Elon Musk & the Neuralink team. It is the longest podcast I've ever done! 🤯 It's a fascinating, super…
Shared by Lex Fridman
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I'm putting together a page where people can make suggestions on how I can improve. This is a quick early draft. Please take the survey & let me know…
I'm putting together a page where people can make suggestions on how I can improve. This is a quick early draft. Please take the survey & let me know…
Shared by Lex Fridman
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I'm looking to host a long-form debate on politics: Trump, Harris & the presidential election. Let me know if you have suggestions for who can…
I'm looking to host a long-form debate on politics: Trump, Harris & the presidential election. Let me know if you have suggestions for who can…
Posted by Lex Fridman
Experience & Education
Publications
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Active Authentication on Mobile Devices via Stylometry, GPS Location, Web Browsing Behavior, and Application Usage Patterns
IEEE Systems Journal
Active authentication is the problem of continuously verifying the identity of a person based on behavioral aspects of their interaction with a computing device. In this study, we collect and analyze behavioral biometrics data from 200subjects, each using their personal Android mobile device for a period of at least 30 days. This dataset is novel in the context of active authentication due to its size, duration, number of modalities, and absence of restrictions on tracked activity. The…
Active authentication is the problem of continuously verifying the identity of a person based on behavioral aspects of their interaction with a computing device. In this study, we collect and analyze behavioral biometrics data from 200subjects, each using their personal Android mobile device for a period of at least 30 days. This dataset is novel in the context of active authentication due to its size, duration, number of modalities, and absence of restrictions on tracked activity. The geographical colocation of the subjects in the study is representative of a large closed-world environment such as an organization where the unauthorized user of a device is likely to be an insider threat: coming from within the organization. We consider four biometric modalities: (1) text entered via soft keyboard, (2) applications used, (3) websites visited, and (4) physical location of the device as determined from GPS (when outdoors) or WiFi (when indoors). We implement and test a classifier for each modality and organize the classifiers as a parallel binary decision fusion architecture. We are able to characterize the performance of the system with respect to intruder detection time and to quantify the contribution of each modality to the overall performance.
More activity by Lex
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IOC is copyright-striking clips of the Olympics. This goes against the spirit of the Olympic Games. As the charter states, the IOC must "ensure the…
IOC is copyright-striking clips of the Olympics. This goes against the spirit of the Olympic Games. As the charter states, the IOC must "ensure the…
Posted by Lex Fridman
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It's always a cool experience when I'm thinking deeply about a problem for awhile, and a good idea suddenly appears. It really feels like that idea…
It's always a cool experience when I'm thinking deeply about a problem for awhile, and a good idea suddenly appears. It really feels like that idea…
Posted by Lex Fridman
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Two supermassive black holes (Phoenix A and TON 618) compared to our solar system (white oval at the center). This reminds me how weird the universe…
Two supermassive black holes (Phoenix A and TON 618) compared to our solar system (white oval at the center). This reminds me how weird the universe…
Shared by Lex Fridman
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I'm talking to Mehdi Hasan soon on the podcast. He is a highly-skilled elucidator of left-wing ideas. We'll talk about Trump-Harris…
I'm talking to Mehdi Hasan soon on the podcast. He is a highly-skilled elucidator of left-wing ideas. We'll talk about Trump-Harris…
Posted by Lex Fridman
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There needs to be a transparent, democratic process for selecting the nominee to replace Biden. Anointing Kamala Harris secretly behind the scenes is…
There needs to be a transparent, democratic process for selecting the nominee to replace Biden. Anointing Kamala Harris secretly behind the scenes is…
Posted by Lex Fridman
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Here's my conversation with Jordan Jonas, wilderness survival expert who won of Alone Season 6, a show where the task is to survive alone in the…
Here's my conversation with Jordan Jonas, wilderness survival expert who won of Alone Season 6, a show where the task is to survive alone in the…
Shared by Lex Fridman
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Biden drops out of race. That's great news. This'll make the presidential race way more interesting. I'm now looking forward to some vibrant…
Biden drops out of race. That's great news. This'll make the presidential race way more interesting. I'm now looking forward to some vibrant…
Posted by Lex Fridman
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I visited xAI and Tesla supercomputer clusters in Memphis & Texas, and was blown away by the rapid rate of progress. It was fascinating to watch Elon…
I visited xAI and Tesla supercomputer clusters in Memphis & Texas, and was blown away by the rapid rate of progress. It was fascinating to watch Elon…
Shared by Lex Fridman
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Wishing Donald Trump good health after an assassination attempt is not a partisan statement, it's a human statement. I'm getting really tired of…
Wishing Donald Trump good health after an assassination attempt is not a partisan statement, it's a human statement. I'm getting really tired of…
Posted by Lex Fridman
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Politics seems to break the brains of a lot of smart people.
Politics seems to break the brains of a lot of smart people.
Posted by Lex Fridman
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History is the best way to study human nature.
History is the best way to study human nature.
Posted by Lex Fridman
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Happy birthday America! To me, it is the greatest nation on Earth ❤ I'm forever grateful for this country, for this life, for all of you for giving…
Happy birthday America! To me, it is the greatest nation on Earth ❤ I'm forever grateful for this country, for this life, for all of you for giving…
Posted by Lex Fridman
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Here's my conversation with Ivanka Trump, a businesswoman, real estate developer, and former senior advisor to the President of the United States. We…
Here's my conversation with Ivanka Trump, a businesswoman, real estate developer, and former senior advisor to the President of the United States. We…
Shared by Lex Fridman
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