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

Tweets

Tavis OrmandyVerified account

@taviso

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

California
taviso.decsystem.org
Joined April 2008

Tweets

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    5. Tavis Ormandy‏Verified account @taviso 15 Nov 2017
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      Replying to @munin

      If you insist on running untrusted executables and refuse to fix that problem, then you're screwed and antivirus doesn't change that. It's plausible AV will increase the amount of time your system is usable between reinstalls, but that is not security.

      2 replies 13 retweets 44 likes
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      Tavis Ormandy‏Verified account @taviso 15 Nov 2017
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      Replying to @munin

      Yep, but the context here is "how to not get hacked" guides. If you're not running random untrusted executables, then antivirus is a liability. If you are running untrusted exes, then you're gonna get hacked.

      8:07 PM - 15 Nov 2017
      • 33 Retweets
      • 100 Likes
      • Linux Technotes Stalker Comancere Paul McMillan Benjamin Häublein Abdulellah Alsaheel Keith Howanitz ⨈Һ𝘢ʈ ╤ћᘓ 𝔽ᵁʗꗪ❓ Martin Cracauer
      6 replies 33 retweets 100 likes
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        2. Tavis Ormandy‏Verified account @taviso 15 Nov 2017
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          Replying to @taviso @munin

          So "don't use antivirus" does have a place in these guides, right above the explanation of how trust works with executables.

          2 replies 4 retweets 23 likes
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        2. GrumpSec Spottycat  🏳️‍🌈 🐆‏ @kyhwana 15 Nov 2017
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          Replying to @taviso @munin

          But "don't run random untrusted executables" falls apart when <person you know> emails you a word doc with a DDE exploit dropper in it.

          1 reply 0 retweets 8 likes
        3. Tavis Ormandy‏Verified account @taviso 15 Nov 2017
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          Replying to @kyhwana @munin

          That requires different advice, like keeping software updated and reducing attack surface. Neither of those can be replaced with antivirus either.

          1 reply 0 retweets 5 likes
        4. 3 more replies
        1. Richard Wall‏ @Skavenger0 16 Nov 2017
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          Replying to @taviso @munin

          I'd argue that there is a problem with the education of the average computer user. Experts should be able to know whether they trust a file or not. Normal users even with training will struggle. Plus you have to consider booby trapped exes you may trust. E.g Putty/CC etc

          0 replies 0 retweets 1 like
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        2. Lambda Duck‏ @Anka213 16 Nov 2017
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          Replying to @taviso @munin

          I know plenty of people who would run untrusted executables even when told not to. Installing antivirus on their computers makes a lot of sense. Same thing with corporate settings where such people are likely to exist.

          1 reply 0 retweets 0 likes
        3. adam‏ @_TrapLoop 16 Nov 2017
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          Replying to @Anka213 @taviso @munin

          Tavis is referring to restricting this behavior in enterprise environments with application whitelisting

          0 replies 0 retweets 1 like
        4. End of conversation
        1. George‏ @g_yunaev 15 Nov 2017
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          Replying to @taviso @munin

          and if you're opening looking-trusted documents, or visit trusted websites (who decided to use untrusted ad networks or simply got hacked)?

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        1. macshome‏ @macshome 17 Nov 2017
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          Replying to @taviso @thegrugq @munin

          Don’t go porn hunting and agree to every link you see?

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