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215 lines
14 KiB
HTML
215 lines
14 KiB
HTML
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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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<a href="/blog" class="side_blog_header">Recent News</a>
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<div class="side_blog_entries">
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<a href="/blog/profile-pics-emoji-translations" class="side_blog_entry">
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<div class="side_blog_date">Feb 3</div>
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<div class="side_blog_title">Profile Photo Maker, Translating Entire Chats, Emoji Categories and More</div>
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</a><a href="/blog/hidden-media-zero-storage-profile-pics" class="side_blog_entry">
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<div class="side_blog_date">Dec 30</div>
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<div class="side_blog_title">Hidden Media, Zero Storage Usage, New Drawing Tools, and More</div>
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</a><a href="/blog/ultimate-privacy-topics-2-0" class="side_blog_entry">
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<div class="side_blog_date">Dec 6</div>
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<div class="side_blog_title">No-SIM Signup, Auto-Delete All Chats, Topics 2.0 and More</div>
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</a><a href="/blog/topics-in-groups-collectible-usernames" class="side_blog_entry">
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<div class="side_blog_date">Nov 5</div>
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<div class="side_blog_title">Topics in Groups, Collectible Usernames and More</div>
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</a><a href="/blog/infinite-reactions-statuses" class="side_blog_entry">
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<div class="side_blog_date">Sep 16</div>
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<div class="side_blog_title">Infinite Reactions, Emoji Statuses and Much More</div>
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</a><a href="/blog/custom-emoji" class="side_blog_entry">
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<div class="side_blog_date">Aug 12</div>
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<div class="side_blog_title">Custom Animated Emoji, Gifting Telegram Premium, and More</div>
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</a><a href="/blog/700-million-and-premium" class="side_blog_entry">
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<div class="side_blog_date">Jun 21</div>
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<div class="side_blog_title">700 Million Users and Telegram Premium</div>
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</a>
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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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<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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<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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<a class="dev_blog_card_link_wrap" href="/blog/profile-pics-emoji-translations"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/464001685/121ea/HyZSx51MXnw.259992/06800efa6899f9ee32" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Profile Photo Maker, Translating Entire Chats, Emoji Categories and More</h4>
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<div class="dev_blog_card_lead">Telegram's first update of the year adds 10 major features by way of a warm-up exercise.</div>
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</div>
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<div class="dev_blog_card_date">Feb 3, 2023</div>
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</div></a><a class="dev_blog_card_link_wrap" href="/blog/hidden-media-zero-storage-profile-pics"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/464001670/fd0c/QD6RWeUTAIs.301579/e818a6df64543c1ad1" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Hidden Media, Zero Storage Usage, New Drawing Tools, Profile Pictures for Your Contacts, and More</h4>
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<div class="dev_blog_card_lead">Sending media with spoiler effects, new ways to save space on your device, new drawing tools…</div>
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</div>
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<div class="dev_blog_card_date">Dec 30, 2022</div>
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</div></a><a class="dev_blog_card_link_wrap" href="/blog/ultimate-privacy-topics-2-0"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/464001668/fd89/UBuBIo3AwaM.254718/99f5aa87b728abadf1" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">No-SIM Signup, Auto-Delete All Chats, Topics 2.0 and More</h4>
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<div class="dev_blog_card_lead">With this update, you can have a Telegram account without a SIM card and set up a global timer to automatically delete messages in all…</div>
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</div>
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<div class="dev_blog_card_date">Dec 6, 2022</div>
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</div></a><a class="dev_blog_card_link_wrap" href="/blog/topics-in-groups-collectible-usernames"><div class="dev_blog_card_wrap">
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<img class="dev_blog_card_image" src="https://telegram.org/file/464001245/11728/VDo2rwNfZ8Y.264840/cbc986292284a428e2" />
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<div class="dev_blog_card_alltext_wrap">
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<h4 class="dev_blog_card_title">Topics in Groups, Collectible Usernames, Voice-to-Text for Video Messages and More</h4>
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<div class="dev_blog_card_lead">Today's update adds topics to organize discussions in large groups, a new form of collectible…</div>
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</div>
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<div class="dev_blog_card_date">Nov 5, 2022</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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