Why Signal ?<\/strong><\/em><\/h2>\n\n\n\nSignal is a Secure Instant Messaging<\/strong> platform that offers powerful end-to-end encryption, with no possibility for the network operator to spy<\/strong> on your exchanges.<\/p>\n\n\n\nHow ?<\/em><\/strong><\/h2>\n\n\n\nMost instant messaging platforms do not guarantee confidentiality in their terms of use (WhatsApp, \u2026) or do not provide end-to-end encryption by default (Telegram, \u2026). Others do not provide the server source code, so users must trust<\/strong> the service operator regarding what actually happens within the server (recording, re-encryption, etc.).<\/p>\n\n\n\nMost alternative systems only use link encryption<\/strong>. This means that one encryption key is used between the caller and the service provider, and another key between the provider and the data recipient. In this model, the message is generally not encrypted at a certain point in the transmission<\/strong>, on the service provider’s infrastructure.<\/p>\n\n\n\n![\"\"](\"https:\/\/abilit.eu\/wp-content\/uploads\/2026\/02\/image-8.png\")
<\/figure>\n\n\n\nThis is how our GSM mobile phone networks operate and how court-authorized wiretapping is made technically possible.<\/p>\n\n\n\n
Signal provides end-to-end encryption for all transmissions, including multicasts<\/strong> (groups, video conferences, …). This is why it is used by the Pentagon when planning wars (SignalGate)<\/a>.<\/p>\n\n\n\n![\"\"](\"https:\/\/abilit.eu\/wp-content\/uploads\/2026\/02\/image-9.png\")
<\/figure>\n\n\n\nFurthermore, if technically possible, Signal avoids intermediate relays, making end-to-end transmission smoother<\/strong>, even in cases of poor Internet quality<\/strong>:<\/p>\n\n\n\n![\"\"](\"https:\/\/abilit.eu\/wp-content\/uploads\/2026\/02\/image-10.png\")
<\/figure>\n\n\n\nSignal also does this for multicast communications (groups, video conferences, etc.), which represents a significant technical challenge<\/strong> (the entire group must agree on a shared encryption key, which will only be valid for that group and for the duration of the exchange). This is why most alternative platforms do not offer end-to-end encryption<\/strong> for this type of exchange (without explicitly stating so).<\/p>\n\n\n\nFinally, the source code is fully available under an OpenSource<\/a> licence, including the server part<\/strong>.<\/p>\n\n\n\nDownload<\/strong><\/em><\/h2>\n\n\n\n
How ?<\/em><\/strong><\/h2>\n\n\n\nMost instant messaging platforms do not guarantee confidentiality in their terms of use (WhatsApp, \u2026) or do not provide end-to-end encryption by default (Telegram, \u2026). Others do not provide the server source code, so users must trust<\/strong> the service operator regarding what actually happens within the server (recording, re-encryption, etc.).<\/p>\n\n\n\nMost alternative systems only use link encryption<\/strong>. This means that one encryption key is used between the caller and the service provider, and another key between the provider and the data recipient. In this model, the message is generally not encrypted at a certain point in the transmission<\/strong>, on the service provider’s infrastructure.<\/p>\n\n\n\n<\/figure>\n\n\n\nThis is how our GSM mobile phone networks operate and how court-authorized wiretapping is made technically possible.<\/p>\n\n\n\n
Signal provides end-to-end encryption for all transmissions, including multicasts<\/strong> (groups, video conferences, …). This is why it is used by the Pentagon when planning wars (SignalGate)<\/a>.<\/p>\n\n\n\n<\/figure>\n\n\n\nFurthermore, if technically possible, Signal avoids intermediate relays, making end-to-end transmission smoother<\/strong>, even in cases of poor Internet quality<\/strong>:<\/p>\n\n\n\n<\/figure>\n\n\n\nSignal also does this for multicast communications (groups, video conferences, etc.), which represents a significant technical challenge<\/strong> (the entire group must agree on a shared encryption key, which will only be valid for that group and for the duration of the exchange). This is why most alternative platforms do not offer end-to-end encryption<\/strong> for this type of exchange (without explicitly stating so).<\/p>\n\n\n\nFinally, the source code is fully available under an OpenSource<\/a> licence, including the server part<\/strong>.<\/p>\n\n\n\nDownload<\/strong><\/em><\/h2>\n\n\n\n
Most alternative systems only use link encryption<\/strong>. This means that one encryption key is used between the caller and the service provider, and another key between the provider and the data recipient. In this model, the message is generally not encrypted at a certain point in the transmission<\/strong>, on the service provider’s infrastructure.<\/p>\n\n\n\n This is how our GSM mobile phone networks operate and how court-authorized wiretapping is made technically possible.<\/p>\n\n\n\n Signal provides end-to-end encryption for all transmissions, including multicasts<\/strong> (groups, video conferences, …). This is why it is used by the Pentagon when planning wars (SignalGate)<\/a>.<\/p>\n\n\n\n Furthermore, if technically possible, Signal avoids intermediate relays, making end-to-end transmission smoother<\/strong>, even in cases of poor Internet quality<\/strong>:<\/p>\n\n\n\n Signal also does this for multicast communications (groups, video conferences, etc.), which represents a significant technical challenge<\/strong> (the entire group must agree on a shared encryption key, which will only be valid for that group and for the duration of the exchange). This is why most alternative platforms do not offer end-to-end encryption<\/strong> for this type of exchange (without explicitly stating so).<\/p>\n\n\n\n Finally, the source code is fully available under an OpenSource<\/a> licence, including the server part<\/strong>.<\/p>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\n<\/figure>\n\n\n\nDownload<\/strong><\/em><\/h2>\n\n\n\n
![\"\"](\"https:\/\/abilit.eu\/wp-content\/uploads\/2026\/02\/image-11.png\")
<\/figure>\n\n\n\n