Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

For the best Twitter experience, please use Microsoft Edge, or install the Twitter app from Microsoft Store.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
0xDUDE's profile
Victor Gevers
Victor Gevers
Victor Gevers
@0xDUDE

Tweets

Victor Gevers

@0xDUDE

Hacker. 5,729 Responsible Disclosures / Coordinated Vulnerability Disclosures. Researcher at @GDI_FDN. Chair of @DIVDnl

In your LAN
divd.nl
Joined March 2015

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Victor Gevers‏ @0xDUDE 2 Mar 2019
      • Report Tweet

      Can anyone (from China) identify these Messaging services? imsg <--... qg <--... qqmesg. <-- https://www.imqq.com/  wwmsg <--... wxmsg <--... yymsg <--... In China, they have a surveillance program on social networks which looks like a jerry-rigged PRISM clone of the NSA.

      134 replies 1,109 retweets 1,990 likes
      Show this thread
    2. Victor Gevers‏ @0xDUDE 18 Mar 2019
      • Report Tweet

      Daily roughly 1 billion private messages get selected & routed to the closest "operator" based on geolocation. It's fascinating how quickly new monitoring solutions are deployed in the same way as the old ones were discovered & taken down. Country-based filtering for "protection"pic.twitter.com/Cm5HtR5PSk

      10 replies 53 retweets 140 likes
      Show this thread
    3. Victor Gevers‏ @0xDUDE 22 Apr 2019
      • Report Tweet

      What we have learned from 1.081.231.257 "captured" WeChat dialogues ( 3,784,309,399 messages) made on the 18 March 2019 is that were automatically selected for "reviewing" based on a "keyword" trigger. Not all the dialogues were in Chinese or only had GPS coordinates in China.pic.twitter.com/4eyYgCXD3C

      4 replies 49 retweets 88 likes
      Show this thread
    4. Victor Gevers‏ @0xDUDE 22 Apr 2019
      • Report Tweet

      From 3.784.309.399 messages, 3.698.798.784 were written in Chinese. 59.378.236 in English and 26.132.379 in another language. 98% of the Chinese messages had a GPS location in China. 68% of the English messages were sent in China. More than 19 million were sent from outside 🇨🇳pic.twitter.com/Va8Lfk3dnw

      12 replies 85 retweets 180 likes
      Show this thread
    5. Victor Gevers‏ @0xDUDE 22 Apr 2019
      • Report Tweet

      We were able to detect a patron of a little bit more than 800 Chinese keywords (combinations) which would be the selection criteria for having the entire WeChat dialogue being stored in this database for further "analysis" by most likely a law enforcement.pic.twitter.com/VCvHp2pSyD

      39 replies 393 retweets 706 likes
      Show this thread
    6. Victor Gevers‏ @0xDUDE 22 Apr 2019
      • Report Tweet

      We could build a "dictionary" of 829 keywords (combinations) based on the intercepted WeChat messages which were written in English. I was a bit surprised to see my full name "Victor Gevers" in this generated English list. 维克多 葛弗斯 was not in the Chinese keyword list.pic.twitter.com/j9NDhqNpmk

      14 replies 75 retweets 201 likes
      Show this thread
    7. Victor Gevers‏ @0xDUDE 22 Apr 2019
      • Report Tweet

      Using these keywords will not get your account locked. But I you try to send your contact a few messages contains a few hundred of these words then you need to “unblock” your account after a few minutes.pic.twitter.com/KwvopraiQQ – at Hong Kong

      9 replies 51 retweets 125 likes
      Show this thread
      Victor Gevers‏ @0xDUDE 23 Apr 2019
      • Report Tweet

      Based on the 3,784,309,399 WeChat messages we tried to build a "keyword trigger list" with NLP tools which possibly triggered the automatic selection criteria for having the entire conversation being stored for review. Image: https://i.imgur.com/PWNQEpe.png  Text: https://pastebin.com/raw/LCPyenzC pic.twitter.com/0H8r1N1jBH

      2:08 PM - 23 Apr 2019 from Taiwan
      • 294 Retweets
      • 442 Likes
      • Zoey🌈 Jamie Ashley IGOT7 Paulus Pärssinen cquaker GnothiSeauton 物超所值มรรคา PunkGoes Zoe Zhu
      27 replies 294 retweets 442 likes
        1. New conversation
        2. Victor Gevers‏ @0xDUDE 25 Apr 2019
          • Report Tweet

          From 3.784.309.399 intercepted messages. 59.378.236 were in English. 19 million were sent from outside Mainland China: South Korea, Taiwan, US, Australia, Canada, Colombia, Venezuela, Belgium, France, UK, Germany, Netherlands, Turkey, Italy, Switzerland, New Zealand & Ireland.pic.twitter.com/7UDRLLIICs

          9 replies 35 retweets 70 likes
          Show this thread
        3. Victor Gevers‏ @0xDUDE 25 Apr 2019
          • Report Tweet

          I am listening to the @riskybusiness show [https://twitter.com/riskybusiness/status/1121269841040510976 …], and I hear this at 21:50: "We've got politicians in Australia who are using WeChat." Wait!? What? So they can have been one of the 937202 "flagged" conversations recorded in Australia? 🤷‍♂️pic.twitter.com/hGwH1ScM4K

          4 replies 28 retweets 67 likes
          Show this thread
        4. Victor Gevers‏ @0xDUDE 29 Apr 2019
          • Report Tweet

          512.2 million WeChat accounts (unique wxids) sent 3,784,309,399 messages on 18-03-2019. 1 billion captured WeChat conversations contained keywords which marked for "review". 59.378.236 were written in English. 19 million were sent from 🇰🇷🇹🇼🇺🇸🇦🇺🇨🇦🇨🇴🇻🇪🇧🇪🇫🇷🇬🇧🇩🇪🇳🇱🇹🇷🇮🇹🇨🇭🇳🇿🇮🇪pic.twitter.com/uWuMEmspSA

          6 replies 35 retweets 83 likes
          Show this thread
        5. Victor Gevers‏ @0xDUDE 10 Jun 2019
          • Report Tweet

          BBC China social media: WeChat and the Surveillance Statehttps://www.bbc.com/news/blogs-china-blog-48552907 …

          1 reply 32 retweets 55 likes
          Show this thread
        6. End of conversation
        1. New conversation
        2. Victor Gevers‏ @0xDUDE 7 Jul 2019
          • Report Tweet

          In the "phrase matching" process the Chinese data scientist student used these Chinese keywords from this wordlist https://github.com/citizenlab/chat-censorship/blob/master/wechat/709crackdown/all-keywords.csv … So we can safely assume that the keyword trigger list is far from complete. So we decided to do this research all over again from scratch...pic.twitter.com/472Bf22hzF

          4 replies 8 retweets 33 likes
          Show this thread
        3. Victor Gevers‏ @0xDUDE Jan 3
          • Report Tweet

          A quick status update. The data scientist who created the current keyword list is still MIA. [https://twitter.com/GDI_FDN/status/1130489101273243648 …]. We did not make so much progress. Yet new breadcrumbs are slowing surfacing thanks to termination of third party translation services. https://github.com/cookiemonster/WeChat …pic.twitter.com/wE8N5k56Ec

          1 reply 6 retweets 17 likes
          Show this thread
        4. 1 more reply
        1. New conversation
        2. 葱头‏ @wangyongcong 24 Apr 2019
          • Report Tweet
          Replying to @0xDUDE

          Great job. As a MMO game (which has an embedded chat system) developer a few years ago, I got access to a keyword list which is fucking amazing. And later when I joined another project, I found the list had grown more greater, including regular expressions.

          1 reply 0 retweets 3 likes
        3. Victor Gevers‏ @0xDUDE 25 Apr 2019
          • Report Tweet
          Replying to @wangyongcong

          To get a better understanding of which regular expressions are used would be very interesting. For now, we assume they are also doing a simple scoring based on the number of keywords, but the weight per keyword is still an estimation based on the number of repetitions.

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. New conversation
        2. momo‏ @hiiammomo 25 Apr 2019
          • Report Tweet
          Replying to @0xDUDE

          我不相信98%使用微信的人都打开了GPS,是通过什么方式获得GPS信息的?另外2%是使用了无法识别的机型吗?😅

          1 reply 0 retweets 0 likes
        3. Victor Gevers‏ @0xDUDE 25 Apr 2019
          • Report Tweet
          Replying to @hiiammomo

          It is about 1 billion conversations made on 18 March 2018. These are not all the WeChat users. These are only the conversation which were flagged based on keywords. All these records had GPS locations tagged with it

          2 replies 1 retweet 3 likes
        4. 1 more reply

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info