Security researcher from American and Israeli academics have developed a new anonymity Tor client called "Astoria" which is specially designed to avoid threat of intelligence like NSA and GCHQ.
Earlier there are many claims made that hackers and researcher have broke the Tor anonymity but till yet we have not yet seen the live demonstration. However, 58 percent of Tor circuits are vulnerable to network-level attackers, such as the NSA or Britain’s Government Communications Headquarters (GCHQ), so the new client, Astoria will make the Tor more stronger.
Tor, commonly called The Onion Router, started out as a project of the U.S. Naval Research Laboratory, but is now developed and maintained by a nonprofit organization called The Tor Project. The software allows users to access resources on the Internet masking their real IP (Internet Protocol) addresses. The encrypted traffic of a user is being routed through multiple relays in the network. Tor does not share your identifying information like your IP address and physical location with websites or service providers on the receiving end because they don't know who is visiting.
About New client - Astoria
Astoria adroitly considers how circuits should, be made “when there are no safe possibilities,” how to safely balance the growing bandwidth load across the Tor network, and how to keep Tor’s performance “reasonable” and relatively fast even when Astoria is in its most secure configuration.By choosing relays based on lowering the threat of eavesdropping by autonomous systems and then choosing randomly if no safe passage is possible, Astoria aims to minimize the information gained by an adversary watching an entire circuit.