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taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

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Tavis OrmandyVerified account

@taviso

Vulnerability researcher at Google. This is a personal stream, opinions expressed are mine.

California
taviso.decsystem.org
Joined April 2008

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    1. Tavis Ormandy‏Verified account @taviso 14 Dec 2019
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      Replying to @qwertyoruiopz @saleemrash1d and

      I dunno, it's a pretty weak argument, the victim can detect it and then use it to attack other people. That has really happened, e.g. Shadow Brokers.

      1 reply 0 retweets 6 likes
    2. qwertyoruiop‏ @qwertyoruiopz 14 Dec 2019
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      Replying to @taviso @saleemrash1d and

      are entities capable of detecting use of such 0day really unable to procure 0day on their own anyway?

      3 replies 1 retweet 10 likes
    3. thaddeus e. grugq‏ @thegrugq 14 Dec 2019
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      Replying to @qwertyoruiopz @taviso and

      There was an office 0day a few years ago. It was first detected in Pakistan, and then about a month later it was detected in India. The Pakistanis had caught it, and then repackaged with their own payload and sent back. It was only discovered after a third party got popped

      1 reply 3 retweets 10 likes
    4. qwertyoruiop‏ @qwertyoruiopz 14 Dec 2019
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      Replying to @thegrugq @taviso and

      what's the rate at which this happens, and what's the rate at which exploits are found ITW by security companies that then kill them? I'd speculate that latter is a lot more likely.

      1 reply 0 retweets 2 likes
    5. thaddeus e. grugq‏ @thegrugq 14 Dec 2019
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      Replying to @qwertyoruiopz @taviso and

      I have no idea of the real numbers for either. I was offering it up as an amusing anecdote. I don’t think it is really relevant anyway. How does key escrow enable stuxnet? If it can’t, then how does key escrow replace 0day as tools for nation states?

      2 replies 1 retweet 6 likes
    6. Tavis Ormandy‏Verified account @taviso 14 Dec 2019
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      Replying to @thegrugq @qwertyoruiopz and

      You order Microsoft to put a signed update on WSUS?

      4 replies 0 retweets 3 likes
    7. Ryan Hurst‏Verified account @rmhrisk 14 Dec 2019
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      Replying to @taviso @thegrugq and

      In this scenario there is a increased risk of being caught vs a built in backdoor; it also requires being to compel not only signing but construction of the hacked binary which atleast in the US has been determined to be illegal. Beyond that it doesn’t scale to needed volumes.

      1 reply 0 retweets 1 like
    8. Tavis Ormandy‏Verified account @taviso 14 Dec 2019
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      Replying to @rmhrisk @thegrugq and

      A similar attack worked when the feds used it for hushmail, no? Not sure I agree it's illegal, because it's really happened in the past.

      2 replies 0 retweets 1 like
    9. Ryan Hurst‏Verified account @rmhrisk 14 Dec 2019
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      Replying to @taviso @thegrugq and

      Hushmail case is interesting; First was Canada not US; second the company had limited resources and wouldn’t have been able to (even if they wanted) to defend from a government with infinite resources.

      2 replies 0 retweets 0 likes
    10. Ryan Hurst‏Verified account @rmhrisk 14 Dec 2019
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      Replying to @rmhrisk @taviso and

      That’s before we look at the difference between a webpage and firmware.

      1 reply 0 retweets 0 likes
      Tavis Ormandy‏Verified account @taviso 14 Dec 2019
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      Replying to @rmhrisk @thegrugq and

      I think that's getting too into the legal weeds haha.

      12:38 PM - 14 Dec 2019
      0 replies 0 retweets 0 likes

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