Dave Levin

@DistributedDave

Asst. professor and CS honors co-chair , working in systems- and network-security. I advise dozens of undergrad researchers in

College Park, MD
Vrijeme pridruživanja: siječanj 2016.

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  1. 31. sij

    Last night, a guy “found” my wife’s phone and when I went to get it, he got verbally aggressive and tried to shake me down for cash or another phone. Next time this happens, I’m just going to remotely wipe the phone and write it off as a loss. Be careful, folks.

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  2. 28. sij

    But wait there's more! Another UMD job ad up, this one specifically for cybersecurity. Come join this powerful team of security researchers in MC2. Apply!

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  3. 26. sij

    And the winner of the watch activity ring challenge between and me is... best of 3!

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  4. 25. sij

    It’s the last day of the competition and is narrowly ahead. Well, I guess it’s going to be a long run day.

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  5. 22. sij

    In an effort to make your user experience more engaging, has created many TLDs that are extremely difficult to distinguish between. This is confusing, increases risks of phishing, and forces organizations to purchase many more domain names as a basic defense.

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  6. proslijedio/la je Tweet

    noticeably speeds up secure connections while honoring revocation data for the whole Web: The median CRLite speedup is 115ms as measured in .

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  7. 22. sij

    I should clarify that it was who taught me this — he has delved into the bowels of TLDs and emerged mostly stronger for it.

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    20. sij

    This is awesome! has published a glossary, explaining in brief all the terms around censorship, blocking, circumvention, DNS and more. Thank you for this really helpful resource, OONI folks :)

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  9. 21. sij

    Today I learned that both .review and .reviews are TLDs. That’s not confusing or anything 🙄 Is it like http/https? Is .reviews for secure reviews?

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  10. 20. sij

    I’m competing with in an Watch activity rings challenge. As dads (of small kids) with upcoming deadlines, it’s more a time management challenge than anything else. (And I’m gonna kick his butt.)

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    Um holy sh*t. This certainly makes it sound like Parnas and co. were actively tracking Yovanovitch's movements. This could explain why Yovanovitch was moved out of Ukraine so quickly.

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  12. 4. sij

    Remember calling that phone number to get the current time? It’s still active — and it now has ads!

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  13. 3. sij

    To all you students out there considering grad school, please note that most of us advisors would never even think about dictating how much "free time" our students should have. We are here to support YOUR work, YOUR success, and YOUR wellbeing, not the other way around.

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  14. 3. sij

    I thought I was dying until I realized my running app was showing me calories burned and not heart rate.

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  15. 1. sij

    Happy new year, everyone! 🎉 I am really grateful for the support, connections, and collaborations that have come from interacting with you all through here. Thank you! Here's hoping for a happy and healthy year for you all. Lots of exciting things ahead.

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  16. 30. pro 2019.

    Everything about this early Internet video is perfect. Connecting to the Internet with a rotary phone, "it takes over 2 hours to receive the entire text of the newspaper," download everything "except of course pictures and ads," So optimistic!

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  17. 30. pro 2019.

    I cannot say enough good things about the OTF. I am very fortunate to be funded by them, and the people who work there and the network of people they’ve helped create are amazing. would not be possible without OTF. Work with them!

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  18. proslijedio/la je Tweet

    In 2019, CPJ recorded 250 journalists jailed for their work globally in our annual prison census. Learn more at

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  19. 28. pro 2019.

    Thank you for giving it a try and spreading the word!! 🙏

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  20. 28. pro 2019.

    Note that these are circumvention strategies that Geneva found while training against China, India, and Kazakhstan—some strategies transfer nicely. We have not yet trained Geneva directly against Iran itself.

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