Most modern IM applications (sometimes called "social messengers", "messaging apps" or "chat apps") use push technology and also add other features such as emojis (or graphical smileys), file transfer, chatbots, voice over IP, or video chat capabilities. It differs from email in that conversations over instant messaging happen in real-time (hence "instant"). Messages are typically transmitted between two or more parties, when each user inputs text and triggers a transmission to the recipient(s), who are all connected on a common network. Instant messaging ( IM) technology is a type of online chat allowing real-time text transmission over the Internet or another computer network. SimpleX clients only relay traffic from known connection and cannot be used by an attacker to amplify the traffic in the whole network.A classic example of instant messaging on a desktop computer: the left window of this software showing a list of contacts (" buddy list") and the right window an active IM conversation P2P networks may be vulnerable to DRDoS attack, when the clients can rebroadcast and amplify traffic, resulting in network-wide denial of service.
SimpleX network has no server discoverability, it is fragmented and operates as multiple isolated sub-networks, making network-wide attacks impossible. Known measures to mitigate it require either a centralized component or expensive proof of work. WebSockets.Īll known P2P networks may be vulnerable to Sybil attack, because each node is discoverable, and the network operates as a whole. SimpleX is transport agnostic - it can work over standard web protocols, e.g. P2P implementations can be blocked by some Internet providers (like BitTorrent). SimpleX uses out-of-band messages or, in some cases, pre-existing secure and trusted connections for the initial key exchange. P2P does not solve MITM attack problem, and most existing implementations do not use out-of-band messages for the initial key exchange. SimpleX design, unlike most P2P networks, has no global user identifiers of any kind, even temporary, and only uses temporary pairwise identifiers, providing better anonymity and metadata protection. In P2P networks the message is passed through O(log N) nodes sequentially, using nodes chosen by the algorithm. SimpleX has both better delivery guarantee and lower latency than P2P, because the message can be redundantly passed via several servers in parallel, using the servers chosen by the recipient.
DHT designs have to balance delivery guarantee and latency. P2P networks rely on some variant of DHT to route messages.
P2P messaging protocols and apps have various problems that make them less reliable than SimpleX, more complex to analyse, and vulnerable to several types of attack.
0 kommentar(er)
