Before entering and delving into this topic about the Grin digital currency and answering the question appearing in the topic title, the following two topics must be addressed to understand the matter more clearly:

• Learn about the details of the first “fork” split of the GRIN project
• Learn about the mimblewimble technology of privacy coins

One user provided proof that the “GRIN” project that runs the “GRIN” coin is not as private and secure as it claims.

This user says he was able to detect 96% of all send and receive addresses in real time.

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Which means complete doubt about what the “GRIN” network offers by saying that it is a completely anonymous blockchain network.

Ivan Bugatti was able to partially break the protocol based on “Mimblewimble” but was able to detect the vast majority of “anonymous” addresses through a simple trick.

Privacy Break provided by Grin:

In a post entitledBreak Mimblewimble’s privacyIvan Bugatti concluded that Grin’s privacy had fundamental flaws.

Ivan Bugatti’s post stated:

It was able to reveal the exact addresses of senders and recipients of 96% of Grin’s transactions in real time.

I was able to do this by just paying $60 per week on Amazon Web Services.

The problem lies in the anonymity of “Mimblewimble” including all transactions in the same history.

This means that one can track transactions using only one address.

By default each “Grin” node can connect to 8 other peers.

However, Bugatti was able to connect the assigned node to every other node on the network, which effectively enabled it to become a supernode and allowed it to detect transactions with nearly perfect accuracy.

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Bugatti says that while Grin still offers a stronger privacy model than Bitcoin, it has proven to have several fundamental flaws.

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He states:

This makes it insufficient for many real-world privacy use cases.

Is Mimblewimble Repairable?

According to Bugatti, the Mimblewimble protocol still has some unique characteristics, however it should be combined with other protocols because as a stand-alone protocol it simply does not have strong enough privacy protection.

The destructive bugs in both Zcash and Monero have been discovered before.

So it’s normal for these things to happen and vulnerabilities exposed.

However, if Grin wants to remain relevant in the cryptocurrency privacy world, it will not be able to continue as it is and must update its mechanism of action.

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