omg I don't know what I am doing

src/topics.js

@@ -353,14 +353,25 @@ var async = require('async'),
 							return parseInt(read[index], 10) === 0;
 						});
 
-						unreadTids.push.apply(unreadTids, newtids);
+						// Filter out topics that belong to categories that this user cannot access
+						async.filter(newtids, function(tid, next) {
+							threadTools.privileges(tid, uid, function(err, privileges) {
+								if (!err && privileges.read) {
+									next(true);
+								} else {
+									next(false);
+								}
+							});
+						}, function(newtids) {
+							unreadTids.push.apply(unreadTids, newtids);
 
-						if(continueCondition()) {
-							start = stop + 1;
-							stop = start + 19;
-						}
+							if(continueCondition()) {
+								start = stop + 1;
+								stop = start + 19;
+							}
 
-						callback(null);
+							callback(null);
+						});
 					});
 				}
 			});