diff --git a/README.md b/README.md
index 5489c18..9f51049 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,7 @@ Number of submissions and number of accepted papers for the following conference
 1. MobiCom: International Conference on Mobile Computing and Networking.
 1. MobiSys: ACM International Conference on Mobile Systems, Applications, and Services.
 1. NAACL: Annual Conference of the North American Chapter of the Association for Computational Linguistics.
+1. NDSS: Network and Distributed System Security Symposium. 
 1. NeurIPS: Conference on Neural Information Processing Systems.
 1. NSDI: USENIX Symposium on Networked Systems Design and Implementation.
 1. PODS: ACM Symposium on Principles of Database Systems.
diff --git a/catalog.html b/catalog.html
index eab6512..ad62437 100644
--- a/catalog.html
+++ b/catalog.html
@@ -73,6 +73,7 @@
         <li><span>MobiSys</span>: ACM International Conference on Mobile Systems, Applications, and Services</li>
         <li><span>NAACL</span>: Annual Conference of the North American Chapter of the Association for Computational Linguistics..</li>
         <li><span>NeurIPS</span>: Conference on Neural Information Processing Systems.</li>
+        <li><span>NDSS</span>: Network and Distributed System Security Symposium.</li>
         <li><span>NSDI</span>: USENIX Symposium on Networked Systems Design and Implementation.</li>
         <li><span>PODS</span>: ACM Symposium on Principles of Database Systems.</li>
         <li><span>SDM</span>: SIAM International Conference on Data Mining.</li>
diff --git a/data/conf.json b/data/conf.json
index 1a3aed7..5e71741 100644
--- a/data/conf.json
+++ b/data/conf.json
@@ -13007,6 +13007,98 @@
         }
       ]
     },
+    {
+      "series": "NDSS",
+      "discipline": "Security",
+      "metadata": {
+        "series_full_title": "Network and Distributed System Security Symposium",
+        "main_discipline": [
+          "ML & AI Security", "Attack Prevention & Detection", "Cloud & Edge Computing Security"
+        ],
+        "other_discipline": [
+          "Anti-Malware", "Mobile & Wireless Network Security", "Security for Cyber-Physical Systems", "Web Security"
+        ],
+        "parent_org": "Internet Society",
+        "website": "https://www.ndss-symposium.org/",
+        "proceedings": "https://www.ndss-symposium.org/previous-ndss-symposia/",
+        "second_track_name": "",
+        "note": ""
+      },
+      "yearly_data": [
+        {
+          "year": 2024,
+          "ordinal": "31st",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 140,
+            "num_sub": 682
+          }
+        },
+        {
+          "year": 2023,
+          "ordinal": "30th",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 94,
+            "num_sub": 574
+          }
+        },
+        {
+          "year": 2022,
+          "ordinal": "29th",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 83,
+            "num_sub": 513
+          }
+        },
+        {
+          "year": 2021,
+          "ordinal": "28th",
+          "location": "Online, Online",
+          "main_track": {
+            "num_acc": 87,
+            "num_sub": 573
+          }
+        },
+        {
+          "year": 2020,
+          "ordinal": "27th",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 88,
+            "num_sub": 506
+          }
+        },
+        {
+          "year": 2019,
+          "ordinal": "26th",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 89,
+            "num_sub": 521
+          }
+        },
+        {
+          "year": 2018,
+          "ordinal": "25th",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 71,
+            "num_sub": 331
+          }
+        },
+        {
+          "year": 2017,
+          "ordinal": "24th",
+          "location": "San Diego, California, USA",
+          "main_track": {
+            "num_acc": 68,
+            "num_sub": 423
+          }
+        }
+      ]
+    },
     {
       "series": "Template",
       "discipline": "",
diff --git a/index.html b/index.html
index 08deb01..5a09cad 100644
--- a/index.html
+++ b/index.html
@@ -152,7 +152,7 @@
                         <option value="CCS">CCS</option>
                         <option value="IEEE S&P">IEEE S&P</option>
                         <option value="USENIX Security">USENIX Security</option>
-<!--                        <option value="NDSS">NDSS</option>-->
+                        <option value="NDSS">NDSS</option>
                     </select>
 
                     <label for="dropdown-speech" title="Speech & Signal Processing">Speech</label>
@@ -233,6 +233,7 @@
             <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-mobi" data-conf="MobiCom"><span>MobiCom</span>: International Conference on Mobile Computing and Networking</a>.</li>
             <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-mobi" data-conf="MobiSys"><span>MobiSys</span>: ACM International Conference on Mobile Systems, Applications, and Services</a>.</li>
             <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-nlp" data-conf="NAACL"><span>NAACL</span>: Annual Conference of the North American Chapter of the Association for Computational Linguistics.</a>.</li>
+            <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-security" data-conf="NDSS"><span>NDSS</span>: Network and Distributed System Security Symposium</a>.</li>
             <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-ai" data-conf="NeurIPS"><span>NeurIPS</span>: Conference on Neural Information Processing Systems</a>.</li>
             <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-net" data-conf="NSDI"><span>NSDI</span>: USENIX Symposium on Networked Systems Design and Implementation</a>.</li>
             <li><a class="cursor-pointer" onclick="clickConf(this.getAttribute('data-category'), this.getAttribute('data-conf'))" data-category="dropdown-db" data-conf="PODS"><span>PODS</span>: ACM Symposium on Principles of Database Systems</a>.</li>
@@ -276,7 +277,8 @@
 
 <footer class="py-4 container">
     <div class="">
-        <div class="text-base">List of 48 conferences: AAAI, ACL, ACM MM, AISTATS, ASPLOS, CCS, CHI, CIKM, COLT, CSCW, CVPR, ECCV, ECIR, EMNLP, HPCA, ICASSP, ICCV, ICDE, ICDM, ICLR, ICME, ICML, ICMR, ICWSM, IEEE S&P, IJCAI, INFOCOM, INTERSPEECH, ISCA, MICRO, MobiCom, MobiSys, NAACL, NeurIPS, NSDI, PODS, SDM, SenSys, SIGCOMM, SIGIR, SIGKDD, TheWebConf, UAI, UbiComp, UIST, USENIX Security, VLDB, and WSDM.</div>
+        <div class="text-base">List of 49 conferences: AAAI, ACL, ACM MM, AISTATS, ASPLOS, CCS, CHI, CIKM, COLT, CSCW, CVPR, ECCV, ECIR, EMNLP, HPCA, ICASSP, ICCV, ICDE, ICDM, ICLR, ICME, ICML, ICMR, ICWSM, IEEE S&P, IJCAI, INFOCOM, INTERSPEECH, ISCA, MICRO, MobiCom, MobiSys, NAACL,
+            NDSS, NeurIPS, NSDI, PODS, SDM, SenSys, SIGCOMM, SIGIR, SIGKDD, TheWebConf, UAI, UbiComp, UIST, USENIX Security, VLDB, and WSDM.</div>
 
         <p>Created and maintained by <a href="https://www.xoveexu.com" target="_blank" rel="noopener noreferrer">Xovee Xu</a> from <a href="https://en.uestc.edu.cn/" target="_blank">UESTC</a>, China. Data are primarily collected from the proceedings, though sometimes from the web, which may contain errors.</p>