Merge pull request #798 from yingjingyang/main

fix hardhat.config.js

Author: liberhe

basic/07-hardhat/hardhat.config.js

@@ -45,6 +45,10 @@ module.exports = {
       url: 'https://ropsten.infura.io/v3/' + process.env.INFURA_ID, //<---- CONFIG YOUR INFURA ID IN .ENV! (or it won't work)
       accounts: [mnemonic()],
     },
+    arbitest: {
+      url: 'https://arbitrum-rinkeby.infura.io/v3/' + process.env.INFURA_ID, //<---- CONFIG YOUR INFURA ID IN .ENV! (or it won't work)
+      accounts: [mnemonic()],
+    },
     matic: {
       url: 'https://polygon-mainnet.infura.io/v3/' + process.env.PROJECT_ID, //<---- CONFIG YOUR INFURA ID IN .ENV! (or it won't work)
       accounts: [mnemonic()]

basic/08-hardhat-graph/hardhat.config.js

@@ -5,16 +5,6 @@ require('dotenv').config();
 const PRIVATE_KEY = process.env.PRIVATE_KEY;
 const defaultNetwork = 'localhost';
 
-function mnemonic() {
-  try {
-    return fs.readFileSync('./mnemonic.txt').toString().trim();
-  } catch (e) {
-    if (defaultNetwork !== 'localhost') {
-      console.log('☢️ WARNING: No mnemonic file created for a deploy account.');
-    }
-  }
-}
-
 // You need to export an object to set up your config
 // Go to https://hardhat.org/config/ to learn more
 module.exports = {
@@ -31,9 +21,7 @@ module.exports = {
     },
     rinkeby: {
       url: 'https://rinkeby.infura.io/v3/' + process.env.INFURA_ID, //<---- YOUR INFURA ID! (or it won't work)
-      accounts: {
-        mnemonic: mnemonic(),
-      },
+      accounts: [PRIVATE_KEY],
     },
     kovan: {
       url: 'https://kovan.infura.io/v3/' + process.env.INFURA_ID, //<---- YOUR INFURA ID! (or it won't work)

security/readme.md

@@ -8,6 +8,7 @@
 - [Ethereum Smart Contract Security Best Practices](https://consensys.github.io/smart-contract-best-practices/)
 - [Examples of Solidity security issues](https://github.com/crytic/not-so-smart-contracts)
 - [Awesome Blockchain Security](https://github.com/xxxeyJ/Awesome-Blockchain-Security)
+- [EVM Deep Dives](https://noxx.substack.com/p/evm-deep-dives-the-path-to-shadowy?s=r)
 
 ## Solidity security wargame