diff --git a/src/data/challenges.ts b/src/data/challenges.ts
index 779eb2b6..3b930d34 100644
--- a/src/data/challenges.ts
+++ b/src/data/challenges.ts
@@ -11,78 +11,66 @@ export interface Challenge {
 
 export const challenges: Challenge[] = [
   {
-    title: 'Making Markets to Make a Change',
-    companyEncrypted: 'FpDvGOwa9WVr4riRPXIFmg',
-    company: 'Optiver',
-    videoUrl: 'https://youtu.be/R2B7QNEAH3c',
+    companyEncrypted: 'Company challenge',
+    title: '',
+    company: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    prize: '1st: An iPhone 13 for each member of the team',
-    channel: 'optiver',
+    prize: '',
+    channel: '',
   },
   {
-    companyEncrypted: 'OJ4LCmSBly+3JmL7P7/V1w',
-    company: 'HP',
-    title: 'HP Inventory & Sales Forecasting',
-    videoUrl: 'https://youtu.be/BDkC4cb-bb8',
+    companyEncrypted: 'Company challenge',
+    company: '',
+    title: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    prize: '1st: 4 HP Laptop 15, 2nd: 4 Hyper X Keyboard, 3rd: 4 Omen Sweater',
-    channel: 'hp',
+    prize: '',
+    channel: '',
   },
   {
-    companyEncrypted: 'TZABPAEwSHar7SLMqkDmuA',
-    company: 'Bunge',
-    title: 'Mission to Improve the Agribusiness Markets',
+    companyEncrypted: 'Company challenge',
+    company: '',
+    title: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    videoUrl: 'https://youtu.be/pSKdCW41170',
-    prize: 'Each member wins a Meta Quest 2',
-    channel: 'bunge',
+    prize: '',
+    channel: '',
   },
   {
-    companyEncrypted: 'IXZ07J9j2ognub5PeUbefg',
-    company: 'Restb.ai',
-    title: 'Most innovative usage of our data',
-    videoUrl: 'https://youtu.be/r-G4yDL2ZpA',
+    companyEncrypted: 'Company challenge',
+    company: '',
+    title: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    prize: 'Travel anywhere up to 200€ for each team member.',
-    channel: 'restbai',
+    prize: '',
+    channel: '',
   },
   {
-    companyEncrypted: 'OKOOYK8p3e6ixR3KQ05l8Q',
-    company: 'Strands',
-    title: 'Build the bank experience you need.',
-    videoUrl: 'https://youtu.be/GkmVmZwSygo',
+    companyEncrypted: 'Company challenge',
+    company: '',
+    title: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    prize:
-      '1 Windows 11 Pro, 12GB RAM 256GB ROM Ιntel Celeron J4125 Mini, 2 New Kindle Paperwhite, 3 Amazon voucher 100€',
-    channel: 'strands',
+    prize: '',
+    channel: '',
   },
   {
-    companyEncrypted: '+5CxQKLiDwgwXZEp3ePpFw',
-    company: 'Vueling',
-    title: 'Flight Fest',
-    videoUrl: 'https://youtu.be/AlECmra8YAo',
+    companyEncrypted: 'Company challenge',
+    company: '',
+    title: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    prize:
-      'The prize for the winners will be a round trip flight to any Vueling destination for the whole team',
-    channel: 'vueling',
+    prize: '',
+    channel: '',
   },
   {
-    companyEncrypted: 'MZHdrReJtUe0TWxiyNwFTA',
-    company: 'Capchase',
-    title: 'SQLillo Royale',
-    videoUrl: 'https://youtu.be/dMfcT_hs_rU',
+    companyEncrypted: 'Company challenge',
+    company: '',
+    title: '',
+    videoUrl: '',
     //description: /* markdown */ ``,
-    prize: '1. Impresora 3D, 2. Set Arduino, 3. Amazon Voucher 100EUR',
-    channel: 'capchase',
-  },
-  {
-    companyEncrypted: '8KmM/3LZtmAsuR4vnOPTvg',
-    company: 'IThinkUPC',
-    title: 'Build an AI Powered App',
-    videoUrl: 'https://youtu.be/QmfVvugVLjA',
-    //description: /* markdown */ ``,
-    prize:
-      '1rt Amazon Voucher 100€, 2nd Amazon Voucher 50€, 3rd Amazon Voucher 30€',
-    channel: 'ithinkupc',
+    prize: '',
+    channel: '',
   },
 ]