Nice. A feature-complete, fast, open-protocol, open-source(partially at least), free-and-committed-to-remaining-free IM solution (iOS+Android mobile apps AND infrastructure) that seems reasonably secure, to a non-expert at least.<p>Have been looking for something like this ever since Google effectively killed Talk in favor of (half-baked) Hangouts, and, around the same time, cloud data security was widely demonstrated to be a contradiction in terms.<p>The question remains, given Telegram's architecture, to which extent does a user still need to trust the entity operating the server infrastructure. Harvesting of contacts probably remains a risk, etc. Any security experts care to comment?<p>More background:
<a href="http://core.telegram.org/api/end-to-end" rel="nofollow">http://core.telegram.org/api/end-to-end</a>
<a href="http://www.ewdn.com/2013/08/29/vkontakte-founder-launches-telegram-a-new-instant-messenger-service/" rel="nofollow">http://www.ewdn.com/2013/08/29/vkontakte-founder-launches-te...</a>