Keegan Ryan

@inf_0_

I like breaking things. 🔑🔫 Into embedded systems, cryptography, and side channel attacks. Pic edited from stream of my 34c3 talk (CC BY 3.0 DE)

Vrijeme pridruživanja: kolovoz 2016.
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  1. proslijedio/la je Tweet
    10. pro 2019.

    Embargo ends - is public: It allows to induce faults into computations in SGX, breaking crypto and corrupting memory. Great collaboration with Kit Murdock, , , , Frank Piessens!!

    7 replies 163 proslijeđena tweeta 241 korisnik označava da mu se sviđa
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  2. proslijedio/la je Tweet
    10. pro 2019.

    We present TL;DR First ever fault injection attack on Intel SGX enclaves. Abuses an undocumented software-based interface to undervolt the CPU. Extract full crypto keys and trigger memory safety violations in bug-free code. Read the paper at

    , , i još njih 3
    7 replies 153 proslijeđena tweeta 229 korisnika označava da im se sviđa
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  3. proslijedio/la je Tweet
    12. stu 2019.

    Join our ZombieLoad talk tomorrow at 9:00am at - loads of insights and new stuff even if you've already read the paper /cc

    23 proslijeđena tweeta 73 korisnika označavaju da im se sviđa
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  4. proslijedio/la je Tweet
    12. stu 2019.

    is back: With our new variant, the attack can be mounted on recent -resistant Intel CPUs! Checkout our updated paper on to find out more! /cc

    41 proslijeđeni tweet 64 korisnika označavaju da im se sviđa
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  5. proslijedio/la je Tweet
    12. stu 2019.

    Another patch Tuesday surprise: Local/Remote timing side-channel attacks on Trusted Platform Modules (TPMs) A CC4+ Certified TPM hardware and Intel PTT (firmware-TPM) are affected.

    47 proslijeđenih tweetova 75 korisnika označava da im se sviđa
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  6. proslijedio/la je Tweet
    11. lip 2019.

    Announcing RAMBleed, a new attack that exploits Rowhammer to leak secret data directly from DRAM. Works also on ECC memory. Joint work with Andrew Kwong, Daniel Genkin and

    8 replies 415 proslijeđenih tweetova 626 korisnika označava da im se sviđa
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  7. proslijedio/la je Tweet
    23. tra 2019.

    TECHNICAL ADVISORY: Private Key Extraction from Hardware-backed Keystores. Read more:

    8 proslijeđenih tweetova 13 korisnika označava da im se sviđa
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  8. 23. tra 2019.

    I used high-powered branch-predictor and memory side channels to extract private keys from Qualcomm's TrustZone keystore. Check it out:

    6 replies 180 proslijeđenih tweetova 380 korisnika označava da im se sviđa
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  9. proslijedio/la je Tweet
    3. ožu 2019.

    "Spoiler", a new microarchitectural attack due to speculative execution is out: Exploits the buggy speculation inside the memory order buffer joint work by SaadIslam MoritzKrebbel

    49 proslijeđenih tweetova 79 korisnika označava da im se sviđa
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  10. 4. pro 2018.

    Spectre on a TV: the results of my recent hardware mini project are now public! Read about it at

    1 reply 4 proslijeđena tweeta 10 korisnika označava da im se sviđa
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  11. 30. stu 2018.

    Fantastic work here! BTB side channels, lattices, and Bleichenbacher's attack. What more could you want?

    Just released a bunch of attacks on 7 TLS implementations making use of good ol' Bleichenbacher as well as Manger's attack (on pkcs#1 v1.5!) also includes a TLS 1.3 downgrade attack. With , Gillham, Genkin, Shamir and
    1 reply 2 korisnika označavaju da im se sviđa
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  12. proslijedio/la je Tweet
    2. stu 2018.

    November DC206 Meeting at : 11/18: Keegan Ryan, Microarchitectural Attacks on Trusted Execution Environments ,

    2 proslijeđena tweeta 2 korisnika označavaju da im se sviđa
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  13. proslijedio/la je Tweet
    2. stu 2018.

    CVE-2018-5407: new side-channel vulnerability on SMT/Hyper-Threading architectures. Check some info about our new non-cache dependent. Paper coming soon.

    1 reply 99 proslijeđenih tweetova 111 korisnika označava da im se sviđa
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  14. proslijedio/la je Tweet
    14. kol 2018.

    Following seven months of responsible disclosure, we are happy to announce that our Foreshadow attack is now public . Work with Mark Silberstein, Daniel Genkin, Frank Piessens

    6 replies 348 proslijeđenih tweetova 389 korisnika označava da im se sviđa
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  15. proslijedio/la je Tweet
    22. lip 2018.

    time but not data flow is unsafe; (c) coarse-grained access patterns leak more than was previously thought. But don't panic, while a cool attack, is not the new . Full details and paper out next week. cc 2/2

    19 proslijeđenih tweetova 40 korisnika označava da im se sviđa
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  16. 13. lip 2018.

    What's better than a key extraction bug in a major crypto library? How about a key extraction bug in 11 major crypto libraries? My latest research:

    6 replies 242 proslijeđena tweeta 378 korisnika označava da im se sviđa
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  17. proslijedio/la je Tweet
    21. svi 2018.

    Variant 4 and 3a have dropped, with the appropriate Intel Whitepaper updates. The RSRE one is the coolest one to me.

    speculative execution, variant 4: speculative store bypass
    52 proslijeđena tweeta 76 korisnika označava da im se sviđa
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  18. proslijedio/la je Tweet
    15. svi 2018.

    Final selection of Recon Talks has finally been announced

    58 proslijeđenih tweetova 80 korisnika označava da im se sviđa
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  19. proslijedio/la je Tweet
    9. svi 2018.

    Our cache+lattice attack on SGX EPID is now public

    105 proslijeđenih tweetova 171 korisnik označava da mu se sviđa
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  20. 28. ožu 2018.

    Great new side channel research on abusing the directional branch predictor. Looking forward to trying this out!

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