In fact, privacy actually varies from blockchain to blockchain. Most of the them, due to the fact the way they are designed, for instance, Bitcoin, is only pseudo-anonymous. How is that? Well, in a public ledger, a wallet which simply consists of a string of numbers and letters does not mean privacy as it might seem or thought. This point of view is totally natural as it does not depend on your identity directly. Although it may not be noticeable from the outside for an end-user, sensitive data like networks, IP addresses etc, other indicators of your identity technically reveal you right there.
This applies to the most of the cryptocurrencies and blokchains on the market, but of course there are exceptions like Bulwark, which is a privacy based cryptocurrency project with a focus on user-freedom that truly put privacy first. Fancy, right. It actually is because it functions both wallets and masternodes over the TOR network. This is where the sensitive information is onionized a.k.a hidden. Where that string is fully anonymous.
The masternodes are key feature of the Bulwark network. They receive, validate, expedite and onionize the transactions and make sure the network is secure. Of course they are rewarded from the network for doing all these work.
The team behind Bulwark also realizes that there are plenty of projects designed for experts. Therefore they are interested in making cryptocurrencies with masternode technology more accessible to novice adopters.
As you can see, blockchain and cryptocurrency can be really as private as you make it like Bulwark made it.
In short, I can confidently say that it qualifies its name, Bulwark: n. a defensive wall.