Updating header image in security article.

Author: rbnpercy

source/_posts/2020-01-30-dapp-frontend-security.md

@@ -4,11 +4,11 @@ author: robin_percy
 categories:
   - tutorials
 layout: blog-post
-image: '/assets/images/web3-article-header.png'
+image: '/assets/images/web-security_banner.jpg'
 
 ---
 
-![Web3.js](/assets/images/web3-article-header.png)
+![Web3.js](/assets/images/web-security_banner.jpg)
 
 
 > *This article is the second in my series of articles based on the frontend of the decentralised web.  Throughout the series we'll look at [Web3.js](/news/2019/12/09/web3-what-are-your-options/) & accessing the Ethereum Blockchain client-side, [frontend security for DApps](/news/2020/01/30/dapp-frontend-security/), how [eWasm / WebAssembly](/news/2020/02/18/wasm-ewasm-what-and-why/) has become the "4th language of the web", and we'll build a realtime Blockchain explorer app with Phoenix LiveView!*