diff --git a/plugins/portal-defense.user.js b/plugins/portal-defense.user.js
new file mode 100644
index 00000000..091baf3d
--- /dev/null
+++ b/plugins/portal-defense.user.js
@@ -0,0 +1,192 @@
+// ==UserScript==
+// @id             iitc-plugin-defense@gluckies
+// @name           IITC plugin: portal defense 
+// @category       Layer
+// @version        0.2.0.@@DATETIMEVERSION@@
+// @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
+// @updateURL      @@UPDATEURL@@
+// @downloadURL    @@DOWNLOADURL@@
+// @description    [@@BUILDNAME@@-@@BUILDDATE@@] Shows the defense values of every portal
+// @include        https://www.ingress.com/intel*
+// @include        http://www.ingress.com/intel*
+// @match          https://www.ingress.com/intel*
+// @match          http://www.ingress.com/intel*
+// ==/UserScript==
+
+@@PLUGINSTART@@
+
+// PLUGIN START ////////////////////////////////////////////////////////
+
+// use own namespace for plugin
+window.plugin.portalDefense = function() {};
+
+window.plugin.portalDefense.MIN_MAP_ZOOM = 15;
+window.plugin.portalDefense.DETAIL_MAP_ZOOM = 17;
+window.plugin.portalDefense.DisplayEnum = {
+  OFF : 0,
+  SIMPLE : 1,
+  DETAIL : 2
+};
+
+window.plugin.portalDefense.regionLayers = {};
+
+// Use portal add and remove event to control render of regions
+window.plugin.portalDefense.portalAdded = function(data) {
+  data.portal.on('add', function() {
+    plugin.portalDefense.renderAttackRegion(this);
+  });
+
+  data.portal.on('remove', function() {
+    plugin.portalDefense.removeAttackRegion(this);
+  });
+}
+
+window.plugin.portalDefense.getDisplay = function() {
+  if (map.getZoom() >= window.plugin.portalDefense.DETAIL_MAP_ZOOM) {
+    return window.plugin.portalDefense.DisplayEnum.DETAIL;
+  } else if (map.getZoom() >= window.plugin.portalDefense.MIN_MAP_ZOOM) {
+    return window.plugin.portalDefense.DisplayEnum.SIMPLE;
+  }
+  return window.plugin.portalDefense.DisplayEnum.OFF;
+}
+
+window.plugin.portalDefense.computeDef = function(portal) {
+  var m = portal.options.details.portalV2.linkedModArray;
+  var ret = {};
+  ret.mod = 0;
+  ret.links = 0;
+  var display = "";
+  $.each(m, function(ind, mod) {
+    if (!mod) return true;
+    if(!mod.stats.MITIGATION)
+      return true;
+    ret.mod += parseInt(mod.stats.MITIGATION);
+  });
+  var link = 0;
+  $(portal.options.details.portalV2.linkedEdges).each(function () {
+    link++;
+  });
+  if (link > 0) {
+    ret.links = Math.round(400/9*Math.atan(link/Math.E));
+  }
+  ret.total = Math.min(95, ret.mod + ret.links);
+
+  return ret;
+}
+
+window.plugin.portalDefense.renderAttackRegion = function(portal) {
+  plugin.portalDefense.removeAttackRegion(portal);
+  if (window.plugin.portalDefense.currentDisplay == window.plugin.portalDefense.DisplayEnum.OFF) return;
+
+  plugin.portalDefense.regionLayers[portal.options.guid] = [];
+  var defense = window.plugin.portalDefense.computeDef(portal);
+  if (defense.total) {
+    var display = defense.total;
+    if (window.plugin.portalDefense.currentDisplay == window.plugin.portalDefense.DisplayEnum.DETAIL) {
+      if (defense.mod) {
+        display += "<br>"+"\u2297"+defense.mod;
+      }
+      if(defense.links) {
+        display += "<br>"+"\u21b1"+defense.links;
+      }
+    }
+    var region = L.marker(portal.getLatLng(), {
+      icon: L.divIcon({
+        className: 'plugin-iic-defense',
+        clickable: false,
+        iconAnchor: [-10,10],
+        html: "<div class='defense-label'>"+display+"</div>"
+        }),
+      guid: portal.options.guid
+    });
+    plugin.portalDefense.regionLayers[portal.options.guid].push(region);
+    region.addTo(plugin.portalDefense.regionLayerGroup);
+  }
+}
+
+window.plugin.portalDefense.reload = function() {
+  $.each(window.portals, function(ind, portal){
+    window.plugin.portalDefense.renderAttackRegion(portal)
+  });
+}
+
+window.plugin.portalDefense.removeAttackRegion = function(portal) {
+  var previousLayers = plugin.portalDefense.regionLayers[portal.options.guid];
+  if (previousLayers) {
+    for (var i = 0; i < previousLayers.length; i++) {
+      plugin.portalDefense.regionLayerGroup.removeLayer(previousLayers[i]);
+    }
+    delete plugin.portalDefense.regionLayers[portal.options.guid];
+  }
+}
+
+window.plugin.portalDefense.regions = {}
+
+window.plugin.portalDefense.showOrHide = function() {
+  var ctrl = $('.leaflet-control-layers-selector + span:contains("Portal Defense")').parent();
+  var display = window.plugin.portalDefense.getDisplay();
+  if (display != window.plugin.portalDefense.DisplayEnum.OFF) {
+    // show the layer
+    if(!window.plugin.portalDefense.regionLayerGroup.hasLayer(window.plugin.portalDefense.defenseLayerGroup)) {
+      window.plugin.portalDefense.regionLayerGroup.addLayer(window.plugin.portalDefense.defenseLayerGroup);
+    }
+    ctrl.removeClass('disabled').attr('title', '');
+  } else {
+    // hide the layer
+    if(window.plugin.portalDefense.regionLayerGroup.hasLayer(window.plugin.portalDefense.defenseLayerGroup)) {
+      window.plugin.portalDefense.regionLayerGroup.removeLayer(window.plugin.portalDefense.defenseLayerGroup);
+    }
+    ctrl.addClass('disabled').attr('title', 'Zoom in to show those.');
+  }
+  if (window.plugin.portalDefense.currentDisplay != display) {
+    window.plugin.portalDefense.currentDisplay = display;
+    window.plugin.portalDefense.reload()
+  }
+}
+
+var setup =  function() {
+  $('#toolbox').append(' <a onclick="window.plugin.portalDefense.reload()">Reload Defense</a>');
+  $("<style>")
+    .prop("type", "text/css")
+    .html(".plugin-iic-defense {\
+            font-size: 10px;\
+            color: #FFFFBB;\
+            font-family: monospace;\
+            text-align: center;\
+            text-shadow: 0 0 0.5em black, 0 0 0.5em black, 0 0 0.5em black;\
+            pointer-events: none;\
+            -webkit-text-size-adjust:none;\
+           }\
+           .defense-label {\
+            position:relative;\
+            background-color:#1B3E59;\
+            opacity:.6;\
+            border:0.5px solid #FFCE00;\
+            width:22px;\
+            text-align:center;\
+            color:#FFFFFF;\
+            text-align:center;\
+            border-radius:6px;\
+           }")
+    .appendTo("head");
+
+  window.plugin.portalDefense.currentDisplay = window.plugin.portalDefense.getDisplay();
+  map.on('zoomend', window.plugin.portalDefense.showOrHide);
+    
+  // this layer is added to tha layer chooser, to be toggled on/off
+  window.plugin.portalDefense.regionLayerGroup = new L.LayerGroup();
+
+  // this layer is added into the above layer, and removed from it when we zoom out too far
+  window.plugin.portalDefense.defenseLayerGroup = new L.LayerGroup();
+
+  window.plugin.portalDefense.regionLayerGroup.addLayer(window.plugin.portalDefense.defenseLayerGroup);
+  window.addLayerGroup('Portal Defense', window.plugin.portalDefense.regionLayerGroup, true);
+    
+  window.addHook('portalAdded', window.plugin.portalDefense.portalAdded);
+    
+  window.plugin.portalDefense.showOrHide();
+}
+
+// PLUGIN END //////////////////////////////////////////////////////////
+
+@@PLUGINEND@@