{"version":"1.0","provider_name":"wade.one","provider_url":"https:\/\/wade.one\/blog","author_name":"wade.one","author_url":"https:\/\/wade.one\/blog","title":"What Makes a Legacy System Dangerous - wade.one","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"20IhdMCrk8\"><a href=\"https:\/\/wade.one\/blog\/2026\/03\/27\/what-makes-a-legacy-system-dangerous\/\">What Makes a Legacy System Dangerous<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/wade.one\/blog\/2026\/03\/27\/what-makes-a-legacy-system-dangerous\/embed\/#?secret=20IhdMCrk8\" width=\"600\" height=\"338\" title=\"&#8220;What Makes a Legacy System Dangerous&#8221; &#8212; wade.one\" data-secret=\"20IhdMCrk8\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/wade.one\/blog\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"A legacy system is not dangerous just because it is old. It becomes dangerous when nobody can change it safely, nobody can see what it is doing, and the business depends on it anyway.","thumbnail_url":"https:\/\/wade.one\/blog\/wp-content\/uploads\/2015\/02\/Wade-Logo-cropped.png","thumbnail_width":1518,"thumbnail_height":1506}