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I've always been curious about I2P. I2P is more decentralized than TOR, as TOR has the weakness of needing exit nodes, and today it is very hard to set one up yourself (and not be arrested/shutdown). However, I don't know enough about network/protocol security to even be able to tell if I2P is legitimately secure, and I haven't seen any scientific analysis of it. Anyone else aware of such an analysis?

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Well the reliance on exit nodes isn't really what separates Tor from I2P; the latter requires exit nodes for accessing publicly-facing servers as well. Neither requires them for accessing servers that are internal to their network. This is sometimes confused because Tor puts more emphasis on outproxying, and I2P on inproxying, but both networks are capable of both activities.

I2P has been around since 2003, same time period as Tor's beginnings.

You can read academic review here which may help answer your question: http://www.i2p2.de/papers.html

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