<h1>Openzeppelin Defender for Smart Contract Security</h1>Assumption: You are a Smart Contract Developer (or working on becoming one) or a CXO of a Web3 Application.Simply put OpenZeppelin (’OZ’) Defender is a Smart Contracts (EVM, Solidity) DevTool. OZ Defender helps you with the following:&nbsp;<ol style="list-style-type:lower-roman;"><li>Code Inspection: A GitHub Action that reviews your code base with every single Git push and provides an analytical report</li><li>Deployments: Enabling contract deployment with bytecode verification and upgrade of smart contracts with upgrade checks.</li><li>Monitoring and Alerts: Set up custom alerts and notifications to ensure dApps maintain compliance and detect threats or any suspicious activities by tracking certain events like ownership transfers, minting of assets, and contract pauses</li><li>Automation: Similar to <a href="https://www.buildbear.io/resources/guides-and-tutorials/gelato_tutorial">Gelato’s Web3 Functions</a>, automate tasks to streamline development and operational processes for dApps</li></ol>&nbsp;For a Web3 App Tech Team: All of the above is simply useful and easy to understand.To the CXO (except CTO): It is likely that only (a) the Monitoring and Alerts, (b) Automation is something that you would be interested or concerned with.&nbsp;<h1>Development and Testing Phase</h1>If your Web3 Application is in the Development and Testing phase, as a CTO you should be in constant need of (a) code inspection, (b) deployments, and (c) automation (testing of it). The following is your current workflow:&nbsp;<ol style="list-style-type:lower-latin;"><li>&nbsp;The team is distributed in smaller divisions (overlapping possible) (not all necessarily): Smart Contracts, Frontend, and Backend.</li><li>&nbsp;Your Smart Contracts Team is using Foundry or HardHat for developing smart contracts and testing them using <a href="https://book.getfoundry.sh/forge/tests">Forge</a>, <a href="https://hardhat.org/tutorial/testing-contracts">HardHat Mocha (Chai)</a></li><li>Everyone is doing a Git Push (possibly to different branches)</li><li>&nbsp;As a CTO you are expected to manage the overall code and thus the branches.</li></ol>&nbsp;<h1>Possibilities with BuildBear Forks</h1><a href="https://www.buildbear.io/">BuildBear</a> complements Defender's capabilities by providing a specialized environment tailored for DApp development and testing helping developers to identify and fix issues before launching to testnet and mainnets. Let's explore its key features and why use Defender leveraging BuildBear Private Testnet Sandboxes.&nbsp;<ul><li>Unlimited Token Minting: Mint unlimited Native and ERC20 tokens with BuildBear faucet.</li><li>Rapid Transaction Times: Instant transaction processing in under 3 seconds</li><li>Private Explorer:&nbsp;Test and debug with private explorer</li><li>Plugins: Seamlessly integrate with third-party services for enhanced development experience</li></ul>&nbsp;<h1>Configuring BuildBear Sandbox with OpenZeppelin Defender</h1>OpenZeppelin Defender's Deploy feature enables developers to securely deploy and upgrade smart contracts, while BuildBear offers a private faucet for unlimited minting of native and ERC20 tokens, with rapid transaction processing. To integrate BuildBear with OpenZeppelin Defender for secure deployment and upgrades of smart contracts, follow these steps:&nbsp;Sign Up for an Openzeppelin Defender Account <a href="https://defender.openzeppelin.com/v2/?utm_campaign=Defender_2.0_2023&amp;utm_source=Docs#/auth/sign-up">here</a>. After signing up, a dashboard will be displayed similar to the image below;&nbsp;&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Screenshot_from_2024_04_09_15_32_09_467c5bfbaa.png" alt="Screenshot from 2024-04-09 15-32-09.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Screenshot_from_2024_04_09_15_32_09_467c5bfbaa.png 245w,https://strapi.buildbear.io/uploads/small_Screenshot_from_2024_04_09_15_32_09_467c5bfbaa.png 500w,https://strapi.buildbear.io/uploads/medium_Screenshot_from_2024_04_09_15_32_09_467c5bfbaa.png 750w,https://strapi.buildbear.io/uploads/large_Screenshot_from_2024_04_09_15_32_09_467c5bfbaa.png 1000w," sizes="100vw"></figure>&nbsp;&nbsp;Create an Account on BuildBear and set up the BuildBear sandbox forked from Mainnet or testnet, Here is a <a href="https://www.buildbear.io/resources/quick-guide">quick guide</a> to get started. After creating a sandbox on any network, copy the RPC URL and Explorer URL of the created sandbox.&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_3_b6129d7577.png" alt="Untitled (3).png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_3_b6129d7577.png 237w,https://strapi.buildbear.io/uploads/small_Untitled_3_b6129d7577.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_3_b6129d7577.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_3_b6129d7577.png 1000w," sizes="100vw"></figure>&nbsp;Navigate to <a href="https://defender.openzeppelin.com/v2/#/auth/sign-in?returnTo=%2Fmanage%2Fnetworks%2Fforks">Defender Forked Networks</a> to add your Sandbox details. Click on “Add Forked Network” and save after entering the details of the Sandbox from the BuildBear dashboard.&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_4_7b8bb80ff2.png" alt="Untitled (4).png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_4_7b8bb80ff2.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_4_7b8bb80ff2.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_4_7b8bb80ff2.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_4_7b8bb80ff2.png 1000w," sizes="100vw"></figure>&nbsp;Relayers are EOA that Defender creates for us. It can be used to send on-chain transactions through Defender. Create a Relayer for the selected network by clicking the ‘Create Relayer’ button and selecting your forked network from the dropdown. Then, Transfer native tokens to the Relayer address from the BuildBear Faucet to cover the gas costs of the transaction.&nbsp;<figure class="image image_resized" style="width:25%;"><img src="https://strapi.buildbear.io/uploads/Untitled_5_23d630a4d2.png" alt="Untitled (5).png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_5_23d630a4d2.png 100w,https://strapi.buildbear.io/uploads/small_Untitled_5_23d630a4d2.png 319w,https://strapi.buildbear.io/uploads/medium_Untitled_5_23d630a4d2.png 479w," sizes="100vw"></figure>&nbsp;Go to <a href="https://defender.openzeppelin.com/v2/#/auth/sign-in?returnTo=%2Fdeploy">Defender Deploy</a> to create a deploy environment either a production or testnet environment based on your forked network. Select your forked network from the drop-down list. Click on continue and Create an approval process for deployment by adding your Relayers, EOA, or Safe multisSig address. Since relayers automate transaction executions and management, add the Relayer's address for the deployment approval. Click on Continue and skip the next step (the upgrade approval process is not supported for the forked network) to complete the setup.&nbsp;Store API keys and secret keys which will be required later. Now the Production environment for deployment is set. Check the balance of Relayer by clicking on Block Explorer.&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_6_492d52789a.png" alt="Untitled (6).png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_6_492d52789a.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_6_492d52789a.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_6_492d52789a.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_6_492d52789a.png 1000w," sizes="100vw"></figure><h1>Deploying Contracts on BuildBear Sandbox with OpenZeppelin Defender</h1>Now that the environment is set, let us start deploying our contracts. In this example, we will deploy the <a href="https://github.com/Uniswap/v2-core/blob/master/contracts/UniswapV2Factory.sol">uniswapv2</a> smart contract using relayer. Follow the below steps to deploy the contract.&nbsp;<ul><li>Create a dot env file in the root directory to add your API and secret key as in the below format</li></ul><pre><code class="language-plaintext">DEFENDER_KEY=""
DEFENDER_SECRET=""</code></pre><ol><li>Compile the contract using <code>npx hardhat compile</code> to create artifacts to import into our deployment script. Write the deployment scripts as shown below:</li></ol>&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/carbon_64b6d87ad7.png" alt="carbon.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_carbon_64b6d87ad7.png 226w,https://strapi.buildbear.io/uploads/small_carbon_64b6d87ad7.png 500w,https://strapi.buildbear.io/uploads/medium_carbon_64b6d87ad7.png 750w,https://strapi.buildbear.io/uploads/large_carbon_64b6d87ad7.png 1000w," sizes="100vw"></figure>&nbsp;<ol><li>Run the script to deploy the contract. After successful deployment, you can track the deployment status on the <a href="https://defender.openzeppelin.com/v2/#/deploy/environment/production">Defender Deploy Dashboard</a>.</li></ol>&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_7_b62e0c4d37.png" alt="Untitled (7).png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_7_b62e0c4d37.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_7_b62e0c4d37.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_7_b62e0c4d37.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_7_b62e0c4d37.png 1000w," sizes="100vw"></figure>&nbsp;<ol><li>Navigate to BuildBear Explorer to see the transaction details.</li></ol>&nbsp;<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_8_00ac9a9fbe.png" alt="Untitled (8).png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_8_00ac9a9fbe.png 221w,https://strapi.buildbear.io/uploads/small_Untitled_8_00ac9a9fbe.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_8_00ac9a9fbe.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_8_00ac9a9fbe.png 1000w," sizes="100vw"></figure>&nbsp;Congratulations! We have successfully deployed smart contracts on BuildBear forked Network with OpenZeppelin Defender.<h1>Conclusion</h1>OpenZeppelin Defender with BuildBear provides a powerful combination of smart contract development and deployment platform, for advanced security and efficiency in your decentralized applications and protocols. With Defender's tools for code inspection, deployment, monitoring, and automation, alongside BuildBear's private environment with robust features for development and testing, you can ensure your smart contracts are secure and optimized from development through to production.Connect with us on&nbsp;<a href="https://twitter.com/_BuildBear">Twitter</a>&nbsp;|&nbsp;<a href="https://www.linkedin.com/company/build-bear/">LinkedIn</a>&nbsp;|&nbsp;<a href="https://t.me/Web3_dApp_Developers">Telegram</a>&nbsp;|&nbsp;<a href="https://github.com/BuildBearLabs">GitHub</a>Author:&nbsp;<a href="https://www.linkedin.com/in/sanamummer/">Sana</a>&nbsp;&nbsp;

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BuildBear complements Defender's capabilities by providing a specialized environment tailored for DApp development and testing helping developers to identify and fix issues before launching to testnet and mainnets. 

How to Secure Your Smart Contracts Using OpenZeppelin Defender

Let’s get started then, Shall we?

Let’s get started then, Shall we?

Test DApps at Scale.