How the Gravity Protocol Team Implements a Security Development Lifecycle

2년 전

Ensuring the security of a blockchain network

Recent security incidents with the DAO, Ethereum Krypton 51% attack, and “epic” vulnerabilities discovered in EOS by Chinese security researchers at Qihoo 360 (luckily fixed) once again tell us that security concerns are paramount for open blockchain networks supported by communities.
First of all, we need to understand – “What is security?” The CIA security triad model, composed of three areas; (1) Confidentiality, (2) Integrity and (3) Availability will be referenced throughout this paper.

According to the National Institute of Standards and Technology (NIST):

What does it take to ensure security in your software system? It means that your engineering team has a certain level of maturity and implements rigorous Secure Software Development Lifecycle (S-SDLC).

The S-SDLC process ensures that security assurance activities such as code review, architecture analysis, and attack modelling, are an integral part of the development effort. The main advantages of pursuing a Secure SDLC approach with regards to an open blockchain are:

  • Increased quality and security of software as security is a continuous concern.
  • Awareness of security considerations by stakeholders and the community.
  • Early detection of flaws and vulnerabilities in the system.
  • Overall reduction of intrinsic business risks for the community.

Since Gravity Protocol is an open blockchain offering solutions for small and medium businesses, secure software is our highest priority.

The Gravity Protocol team follows a development process similar to Microsoft Security Development Lifecycle (SDL), which comprises the following stages:

1) Training: We have experienced engineers on board, all of which are masters of secure design, threat modeling, secure coding, and security testing best practices.

2) Requirements: We’ve established security requirements and performed security and privacy risk assessment. The following types of attacks were identified:

  • 51% Attacks.
  • DDoS Attacks.
  • Attacks through gaining profit from fake activity.

The first type of attacks is only theoretically possible for PoS consensus algorithms in general and for our DPoI algorithm in particular. The second type of attacks is more or less addressed by blockchain architecture. We will focus on the third, which is specific to Gravity Protocol since it implements the Adaptive Emission feature. In our view, Adaptive Emission is one more way to incentivize network participants’ activity. The scenario for “fake activity attack” is as follows:

There exists a chance that a user or a group of users begin to imitate activity, e.g. by passing one coin between several affiliated accounts and gaining the profit from the dynamic emission.

3. Design: Gravity Protocol is a fork of the Graphene platform, which has proven to be secure in various implementations. As for a“fake activity attack”, a preventive measure that can be taken is by regulating the cost of transactions. At the same time, it should be highlighted that DPoI consensus algorithm (used by Gravity Protocol) already has some necessary features to protect the system against imitated activity. In particular, the algorithm takes into account both the transactional activity index for each client and their stake volume. Discovering clusters in a transaction graph is another means of managing affiliated accounts in such a way as to protect the network against fraudulent activity.

4) Implementation: Our engineering team performs rigorous static analysis and security checks prior to compilation.

5) Verification: The verification of Gravity Protocol software starts with the modelling of various attack scenarios with modules of DPoI and Dynamic Emission calculation. This modelling is performed by our mathematician Alexey Prokopov and data scientist Svetlana Ivina. The results of this modelling will be published soon, (see our upcoming publications). Our team designed an extensive bundle of automatic tests, which run on our private testnet prior to deployment to public testnet. We also introduce gamification to our verification process and very soon we will announce The Battle of the Bots in our testnet. This game is targeted at discovering security breaches in our software.

6) Release: To provide Final Security Review we asked Qiwi Blockchain Technologies for an independent audit of our network. We are going to reveal main highlights of this audit in an upcoming publication.

7) Response: Gravity Protocol software implements extensive logging and monitoring to enable the prompt discovery of potential attackers. We provide detailed instructions for individuals running our nodes about how to run/backup/resync the nodes.

We hope that our efforts and focus on the creation of a quality and secure software will help us in building great community and establish firm ground for an ecosystem of valuable services and applications for small and medium businesses.

by Alexander Lesnevsky

📢 Gravity Launches Public Testnet

Come to our testnet and break our toys!
Gravity Testnet Instructions Set

Want to join our team?

Gravity Protocol is hiring!

See the previous articles

Gravity Protocol Intro
Gravity Protocol Roadmap
A Deeper Look Into Dan Larimer’s radio
Gravity Protocol initial distribution
Adaptive Emission: Making Blockchain Economy Real
Gravity IPFS: Off-chain Data Storage
Gravity: Ecosystem Participants
Gravity: Stablecoin Solutions

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You spelled out well your value, add solution. I hope your method is super effective against attacks. Have you tried to court the EOS team to use your service?

51% Attacks. DDoS Attacks. Attacks through gaining profit from fake activity

These are probably the most important issues you outlined. 51% attacks have happened as you mentioned on Ethereum back in the day and are still possible, hell maybe one day if a supercomputer big enough could possibly do it to Bitcoin. It's crazy the fake spending that was done on Zcash. I'm sure with your method you could of prevented these. Thanks for the share!

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Thank you! Graphene-based chains are not susceptible to this type of attack (51% Attacks).

I think your gravity team are on to something great and pleasant.. It's cool and nice. I have utmost belief that's your method will work.. I just wanna ask if some from Nigeria can be employed also to work with gravity protocol @gravity-protocol

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That's cool

I always stop by here my friend, for your publications to learn from you and the way you do the post ... Thanks for such a good contribution, from #venezuela support your work my friend ... greetings <3
@gravity-protocol

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Thank you for your attention.

Muy interesante información. Excelente

an very interestinng projeckt.
wish them some luck!

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Security is most important of life

This is an interesting topic, Excellent, THANKS for sharing!

very intrested topic

If your methods can prevent the hackers than nothing like it so many people are invested security is a big concern

This service is necessary for all cryptos, security is the most important issue regarding cryptocurrency.

Thanks for sharing, taking care of security seemlessly is very important

Information well put, hope it attracts new sympathizers, after all security is the future.

Success!

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Super content waiting for next posts, great to read and watching greetings

Congratulations @gravity-protocol!
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