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216 lines
14 KiB
HTML
216 lines
14 KiB
HTML
<!DOCTYPE html>
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<html class="">
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<title>Crowdsourcing a More Secure Future</title>
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<ul class="nav navbar-nav navbar-right"><li class="dropdown top_lang_select"><a class="dropdown-toggle" onclick="return dropdownClick(this, event)" href="#"><i class="dev_top_lang_icon"></i>EN <b class="minicaret"></b></a>
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<div class="side_blog_entries">
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<a href="/blog/similar-channels" class="side_blog_entry">
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<div class="side_blog_date">Nov 30</div>
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<div class="side_blog_title">Similar Channels, Reposting Stories, and 9 More Features</div>
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</a><a href="/blog/giveaways" class="side_blog_entry">
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<div class="side_blog_date">Nov 6</div>
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<div class="side_blog_title">Giveaways in Channels and Free Premium</div>
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</a><a href="/blog/reply-revolution" class="side_blog_entry">
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<div class="side_blog_date">Oct 28</div>
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<div class="side_blog_title">Replies 2.0, Adjustable Link Previews, Name Colors and More</div>
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</a><a href="/blog/channel-stories" class="side_blog_entry">
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<div class="side_blog_date">Sep 22</div>
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<div class="side_blog_title">Stories in Channels, View-Once Media and More</div>
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</a><a href="/blog/stories" class="side_blog_entry">
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<div class="side_blog_date">Aug 14</div>
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<div class="side_blog_title">Stories and 10 Years of Telegram</div>
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</a><a href="/blog/shareable-folders-custom-wallpapers" class="side_blog_entry">
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<div class="side_blog_date">Apr 21</div>
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<div class="side_blog_title">Shareable Chat Folders, Custom Wallpapers and More</div>
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</a><a href="/blog/power-saving" class="side_blog_entry">
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<div class="side_blog_date">Mar 8</div>
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<div class="side_blog_title">Power Saving Mode and More</div>
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</a>
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</div>
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</div>
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</div></div>
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<div id="dev_page_content_wrap" class=" ">
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<div class="dev_page_bread_crumbs"></div>
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<h1 id="dev_page_title">Crowdsourcing a More Secure Future</h1>
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<div id="dev_page_content"><div class="blog_side_image_wrap">
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<img src="/img/tl_card_castle.png" class="blog_side_image"/>
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</div>
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<blockquote>
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<p><strong>UPD:</strong> See <a href="https://core.telegram.org/bug-bounty">this page</a> for the latest details about the <a href="https://core.telegram.org/bug-bounty">Telegram Bug Bounty Program</a>.</p>
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</blockquote>
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<p>A few days ago we launched a <a href="http://telegram.org/crypto_contest"><strong>contest</strong></a> to improve Telegram's security and are delighted to already have the first results. A <a href="http://habrahabr.ru">Russian IT-community</a> user identified a potentially vulnerable spot in our secret chat implementation. While this would not help him decipher the traffic and win <a href="http://telegram.org/crypto_contest">the contest</a>, his achievement deserves a notice — and a big prize.</p>
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<blockquote>
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<p>The habrahabr user <a href="http://habrahabr.ru/users/x7mz/">x7mz</a> had discovered that in case the Telegram server could be seized by a malicious third party, it could send different nonce numbers to each of the clients participating in a secret chat.</p>
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<p>These nonce numbers were introduced to add more randomness to the secret chat keys, mostly because of possible undiscovered vulnerabilities of the random generators on mobile devices (for example, one such vulnerability was found this August in <a href="http://android-developers.blogspot.ru/2013/08/some-securerandom-thoughts.html">android phones</a>).</p>
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<p>As was pointed out, this solution would have also made it possible for the visual representations of the shared secret key to be identical in case of a man-in-the-middle attack — provided such attack was done by the seized server. Obviously, the server has been under Telegram's control all this time, so this theoretical threat never had a chance to come to life.</p>
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</blockquote>
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<p>The developer who found the potential weakness has earned a reward of <strong>$100,000</strong>. We have contacted him to find out how he would like to collect his prize.</p>
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<p>A similar reward awaits anyone who finds viable ways of compromising <a href="https://core.telegram.org/mtproto">MTProto’s</a> security (and there is an outstanding reward of $200,000 for <a href="http://telegram.org/crypto_contest">deciphering Telegram traffic</a>). All submissions to <strong>security@telegram.org</strong> which result in a change of code or configuration are eligible for bounties, ranging from <strong>$500</strong> to <strong>$100,000</strong> or more, depending on the severity of the issue.</p>
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<p>This story showcases the importance of keeping the <a href="https://core.telegram.org/mtproto">protocol specification</a> and <a href="http://telegram.org/source">source code</a> open — this way thousands of bright minds from all over the world can help us find potential vulnerabilities and improve the protocol.</p>
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<p>Let’s keep on looking for any weak spots. Together we can make Telegram unbreakable.</p>
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<p>December 21, 2013<br><em>The Telegram Team</em></p>
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</div>
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</div>
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<div class="tl_main_share clearfix">
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<a href="https://t.me/share/url?url=https%3A%2F%2Ftelegram.org%2Fblog%2Fcrowdsourcing-a-more-secure-future&text=A%20guy%20from%20Russia%20just%20earned%20%24100%2C000.%20Crowdsourcing%20a%20More%20Secure%20Future" class="tl_telegram_share_btn" id="tl_telegram_share_btn" data-text="A guy from Russia just earned $100,000. Crowdsourcing a More Secure Future" data-url="https://telegram.org/blog/crowdsourcing-a-more-secure-future"><i class="tl_telegram_share_icon"></i><span class="tl_telegram_share_label" target="_blank">Forward</span></a>
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</div>
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</div>
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<div class="tl_main_recent_news_wrap tlb_other_news_wrap tl_blog_list_page_wrap">
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<h3 class="tl_main_recent_news_header">
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<a href="/blog">Other News</a>
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</h3>
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<div class="tl_main_recent_news_cards clearfix">
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<a class="dev_blog_card_link_wrap" href="/blog/similar-channels"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/400780400090/1/RprIYMnvOUg.277465/d9f6381d8e3088a8f7" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Similar Channels, Reposting Stories, and 9 More Features</h4>
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<div class="dev_blog_card_lead">Today's update lets you find more channels on similar topics, repost stories from friends and channels, and add video messages to stories.…</div>
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</div>
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<div class="dev_blog_card_date">Nov 30, 2023</div>
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</div></a><a class="dev_blog_card_link_wrap" href="/blog/giveaways"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/400780400867/1/urmYJbbNk5E.288288/8288e7d1770857dcf1" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Giveaways in Channels and Free Premium</h4>
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<div class="dev_blog_card_lead">Channel owners can now launch Giveaways to randomly distribute prizes among their followers. This is great if you want to promote your channel, get new subscribers or reward existing…</div>
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</div>
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<div class="dev_blog_card_date">Nov 6, 2023</div>
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</div></a><a class="dev_blog_card_link_wrap" href="/blog/reply-revolution"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/400780400780/1/g_radu3Y0M8.287207/035dae82b433286e51" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Replies 2.0, Adjustable Link Previews, Name Colors and More</h4>
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<div class="dev_blog_card_lead">Today's update lets you quote specific parts of messages when replying, send your replies to other chats, add quote formatting to any text…</div>
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</div>
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<div class="dev_blog_card_date">Oct 28, 2023</div>
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</div></a><a class="dev_blog_card_link_wrap" href="/blog/channel-stories"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/400780400873/1/yQiyKrn7_NE.258715/33a6d6c835c123263a" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Stories in Channels, View-Once Media and More</h4>
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<div class="dev_blog_card_lead">Channels can start posting stories thanks to a new boost system. Stories now have reaction stickers and the option to add your own music.…</div>
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</div>
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<div class="dev_blog_card_date">Sep 22, 2023</div>
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</div></a>
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Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed.
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