francescomecca.euenContents © 2023 <a href="mailto:francescomecca.eu">Francesco Mecca</a> Wed, 30 Aug 2023 15:57:17 GMTNikola (getnikola.com)http://blogs.law.harvard.edu/tech/rssfrancescomecca.eu/blog/2016/7/6/im-services/Francesco Mecca<p>I made this chart for a presentation at the <a href="https://cyber.law.harvard.edu/">Berkman Klein Center</a></p> <table> <thead> <tr> <th></th> <th style="text-align: center;">Whatsapp</th> <th style="text-align: center;">Telegram</th> <th style="text-align: right;">Signal</th> </tr> </thead> <tbody> <tr> <td>Source code</td> <td style="text-align: center;">closed source</td> <td style="text-align: center;">open source</td> <td style="text-align: right;">open source</td> </tr> <tr> <td>Api</td> <td style="text-align: center;">none</td> <td style="text-align: center;">various</td> <td style="text-align: right;">library</td> </tr> <tr> <td>Encription protocol</td> <td style="text-align: center;">state of the art</td> <td style="text-align: center;">self made</td> <td style="text-align: right;">state of the art</td> </tr> <tr> <td>Contact list location</td> <td style="text-align: center;">cloud</td> <td style="text-align: center;">cloud</td> <td style="text-align: right;">cloud, encrypted</td> </tr> <tr> <td>Forward Secrecy</td> <td style="text-align: center;">yes</td> <td style="text-align: center;">yes</td> <td style="text-align: right;">yes</td> </tr> <tr> <td>Database</td> <td style="text-align: center;">phone storage</td> <td style="text-align: center;">cloud</td> <td style="text-align: right;">phone storage</td> </tr> <tr> <td>Backup capability</td> <td style="text-align: center;">Icloud or Gcloud</td> <td style="text-align: center;">builtin</td> <td style="text-align: right;">none</td> </tr> <tr> <td>Revenue</td> <td style="text-align: center;">ads (Facebook)</td> <td style="text-align: center;">donation based</td> <td style="text-align: right;">donation based</td> </tr> <tr> <td>Federation</td> <td style="text-align: center;">no</td> <td style="text-align: center;">no</td> <td style="text-align: right;">no</td> </tr> <tr> <td>Alternative download location</td> <td style="text-align: center;">website</td> <td style="text-align: center;">F-Droid</td> <td style="text-align: right;">none</td> </tr> <tr> <td>Uses third party services</td> <td style="text-align: center;">no</td> <td style="text-align: center;">no</td> <td style="text-align: right;">Google Cloud Messaging</td> </tr> <tr> <td>Servers location</td> <td style="text-align: center;">US</td> <td style="text-align: center;">Russia</td> <td style="text-align: right;">US</td> </tr> <tr> <td>Tied to mobile number</td> <td style="text-align: center;">yes</td> <td style="text-align: center;">yes, but nickname available</td> <td style="text-align: right;">yes</td> </tr> <tr> <td>Desktop client</td> <td style="text-align: center;">no</td> <td style="text-align: center;">yes</td> <td style="text-align: right;">no</td> </tr> </tbody> </table>instant messagingmessaging protocolsPesceWandasignaltelegramwhatsappfrancescomecca.eu/blog/2016/7/6/im-services/Wed, 06 Jul 2016 00:00:00 GMT