diff --git a/packages/center/handler.ts b/packages/center/handler.ts
index 5da14967..eb256bb2 100644
--- a/packages/center/handler.ts
+++ b/packages/center/handler.ts
@@ -1,3 +1,4 @@
+import assert from 'assert';
 import crypto from 'crypto';
 import yaml from 'js-yaml';
 import * as bus from 'hydrooj/src/service/bus';
@@ -28,7 +29,13 @@ class DataReportHandler extends Handler {
     @post('installId', Types.String)
     @post('payload', Types.String)
     async post(domainId: string, installId: string, _payload: string) {
-        const payload: any = yaml.load(decrypt(_payload));
+        let payload: any;
+        try {
+            payload = yaml.load(decrypt(_payload));
+        } catch (e) {
+            payload = yaml.load(_payload);
+        }
+        assert(payload.url);
         const old = await coll.findOne({ _id: installId });
         await coll.updateOne({ _id: installId }, {
             $set: {
diff --git a/packages/center/package.json b/packages/center/package.json
index 317e0b0d..f1827bee 100644
--- a/packages/center/package.json
+++ b/packages/center/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hydrooj/center",
-    "version": "0.1.2",
+    "version": "0.1.3",
     "main": "package.json",
     "repository": "https://github.com/hydro-dev/Hydro.git",
     "author": "undefined <i@undefined.moe>",
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 996b4756..578f6f97 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "3.17.8",
+    "version": "3.17.9",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/service/monitor.ts b/packages/hydrooj/src/service/monitor.ts
index b737e4bb..fe5e617d 100644
--- a/packages/hydrooj/src/service/monitor.ts
+++ b/packages/hydrooj/src/service/monitor.ts
@@ -1,4 +1,3 @@
-import crypto from 'crypto';
 import { dump } from 'js-yaml';
 import superagent from 'superagent';
 import type { StatusUpdate } from '@hydrooj/utils/lib/sysinfo';
@@ -10,13 +9,6 @@ import db from './db';
 const coll = db.collection('status');
 const logger = new Logger('monitor');
 
-function crypt(str: string) {
-    const cipher = crypto.createCipheriv('des-ecb', 'hydro-oj', ''); // lgtm [js/hardcoded-credentials]
-    let encrypted = cipher.update(str, 'utf8', 'hex');
-    encrypted += cipher.final('hex');
-    return encrypted;
-}
-
 export async function feedback(): Promise<[string, StatusUpdate]> {
     const {
         system, domain, document, user, record,
@@ -56,12 +48,12 @@ export async function feedback(): Promise<[string, StatusUpdate]> {
         const status = await db.db.admin().serverStatus();
         info.dbVersion = status.version;
     } catch (e) { }
-    const payload = crypt(dump(info, {
+    const payload = dump(info, {
         replacer: (key, value) => {
             if (typeof value === 'function') return '';
             return value;
         },
-    }));
+    });
     if (process.env.CI) return [mid, $update];
     superagent.post(`${system.get('server.center')}/report`)
         .send({ installId, payload })