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AndreaBarisani's profile
Andrea Barisani
Andrea Barisani
Andrea Barisani
Verified account
@AndreaBarisani

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Andrea BarisaniVerified account

@AndreaBarisani

Head of Hardware Security - F-Secure ■ Founder - Inverse Path

Trieste
andrea.bio
Joined August 2014

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    1. Joanna Rutkowska‏Verified account @rootkovska 3 Dec 2015

      Joanna Rutkowska Retweeted Joanna Rutkowska

      Reminder to those who think DVD-Rs are such a no-brainer for air-gap implementation:https://twitter.com/rootkovska/status/672404850383134720 …

      Joanna Rutkowska added,

      Joanna RutkowskaVerified account @rootkovska
      Replying to @luvsqx
      @luvsqx Using CD-R requires you to plug a complex untrusted USB device (the CD-R drive), not v. wise! @i0n1c @AndreaBarisani
      6 replies 7 retweets 4 likes
    2. Jacob Appelbaum‏ @ioerror 3 Dec 2015
      Replying to @rootkovska

      @rootkovska Uh, buy two?

      1 reply 0 retweets 2 likes
    3. Joanna Rutkowska‏Verified account @rootkovska 3 Dec 2015
      Replying to @ioerror

      @ioerror How do you ensure it's clean state the first time you connect? (Vendor rootkit in the uC flash? Or backdoored during transist?)

      5 replies 0 retweets 2 likes
    4. Joanna Rutkowska‏Verified account @rootkovska 3 Dec 2015
      Replying to @rootkovska

      @ioerror Point being: there are no simple (code complexity-wise) means of transferring data into an airgapped machine.

      2 replies 0 retweets 1 like
      Andrea Barisani‏Verified account @AndreaBarisani 3 Dec 2015
      Replying to @rootkovska

      @rootkovska @ioerror SD cards with internal readers, whether USB or directly interfaced, provide a quite narrow code attack surface imho

      11:38 AM - 3 Dec 2015
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Andrea Barisani‏Verified account @AndreaBarisani 3 Dec 2015
          Replying to @AndreaBarisani

          @rootkovska @ioerror at least compared to other external storage media

          2 replies 0 retweets 0 likes
        3. Joanna Rutkowska‏Verified account @rootkovska 3 Dec 2015
          Replying to @AndreaBarisani

          @AndreaBarisani Sure, but I think @i0n1c wanted a diode-like medium (hence DVD-R) @ioerror

          1 reply 0 retweets 0 likes
        4. Andrea Barisani‏Verified account @AndreaBarisani 3 Dec 2015
          Replying to @rootkovska

          @rootkovska @i0n1c @ioerror Ethernet connected storage, cut TX wire and disable automatic crossover ;)

          0 replies 0 retweets 2 likes
        5. End of conversation
        1. New conversation
        2. Thomas Duboucher‏ @Serianox_ 3 Dec 2015
          Replying to @AndreaBarisani

          @AndreaBarisani @rootkovska @ioerror SD cards are already complex computers with a 80251 CPU. :3

          1 reply 0 retweets 0 likes
        3. Andrea Barisani‏Verified account @AndreaBarisani 3 Dec 2015
          Replying to @Serianox_

          @Serianox_ @rootkovska @ioerror yes but the communication protocol allows very limited interaction

          1 reply 0 retweets 0 likes
        4. Thomas Duboucher‏ @Serianox_ 3 Dec 2015
          Replying to @AndreaBarisani

          @AndreaBarisani @rootkovska @ioerror I wouldn't assume the driver author expected malicious behavior from the SD card.

          1 reply 0 retweets 0 likes
        5. Andrea Barisani‏Verified account @AndreaBarisani 3 Dec 2015
          Replying to @Serianox_

          @Serianox_ @rootkovska @ioerror a malicious SD card would have very little to do against host, unless the driver is total SNAFU

          1 reply 0 retweets 1 like
        6. Andrea Barisani‏Verified account @AndreaBarisani 3 Dec 2015
          Replying to @AndreaBarisani

          @Serianox_ @rootkovska @ioerror we implemented hardware diodes and test external interfaces on all kind of systems, some experience there ;)

          1 reply 0 retweets 0 likes
        7. Thomas Duboucher‏ @Serianox_ 3 Dec 2015
          Replying to @AndreaBarisani

          @AndreaBarisani @rootkovska @ioerror Unfortunately, not everyone has that much experience. :)

          0 replies 0 retweets 0 likes
        8. End of conversation

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