🔐 DEVICE CHECKER SERVER-SIDE SECURITY DEEP DIVE 🔐
ARCHITECTURE:
- Platform: Vercel (serverless edge functions)
- Design: Stateless, zero-knowledge validation
- Privacy: No data storage, auto-expiring logs
🔒 SECURITY FEATURES:
1. CREDENTIAL ISOLATION
✅ Google service account → Base64 → Env variable
✅ Never in Git, never in code
✅ Vercel encrypted at rest
✅ Rotatable anytime
2. STATELESS DESIGN
✅ No database (no breach risk)
✅ No sessions, no user accounts
✅ Request → Validate → Forget
3. API SECURITY
✅ CORS configured
✅ Input sanitization
✅ Error obfuscation
✅ Rate limiting ready
4. NETWORK SECURITY
✅ HTTPS only (TLS 1.3)
✅ Vercel CDN (DDoS protection)
✅ Edge network distributed
✅ Auto-scaling
5. PRIVACY-FIRST
✅ Zero data retention
✅ Tokens never stored
✅ Logs auto-expire (24-48h)
✅ GDPR compliant
6. DEPLOYMENT
✅ Private Git repo
✅ Env variable encryption
✅ Zero-downtime updates
✅ Instant rollback
⚔️ VS SPIC/PLAY INTEGRITY CHECKER SERVERS:
THEIR SERVERS:
❌ Public repos (spic-server, 1nikolas/*)
❌ Backend logic exposed
❌ Credentials format documented
❌ Self-hosted burden
❌ Unclear data handling
DEVICECHECKER:
✅ Private repo → logic hidden
✅ Proper secrets management
✅ Vercel enterprise security
✅ Zero-knowledge validation
✅ Privacy guaranteed
KEY ADVANTAGES:
1. Private backend → Protected from Google
2. Serverless → No persistent attack surface
3. Stateless → Zero data retention
4. Secrets isolated → Never exposed
5. Enterprise infrastructure → Vercel security
6. Zero-knowledge → Validate & forget
Security = Client + Server + OpSec
SPIC/Play Integrity Checker:
❌ Public everything
❌ Free intel to Google
❌ Privacy unclear
DeviceChecker:
✅ Private repos
✅ Proper opsec
✅ Privacy-first
✅ Enterprise security
This is secure apps in 2025. 💪
ARCHITECTURE:
- Platform: Vercel (serverless edge functions)
- Design: Stateless, zero-knowledge validation
- Privacy: No data storage, auto-expiring logs
🔒 SECURITY FEATURES:
1. CREDENTIAL ISOLATION
✅ Google service account → Base64 → Env variable
✅ Never in Git, never in code
✅ Vercel encrypted at rest
✅ Rotatable anytime
2. STATELESS DESIGN
✅ No database (no breach risk)
✅ No sessions, no user accounts
✅ Request → Validate → Forget
3. API SECURITY
✅ CORS configured
✅ Input sanitization
✅ Error obfuscation
✅ Rate limiting ready
4. NETWORK SECURITY
✅ HTTPS only (TLS 1.3)
✅ Vercel CDN (DDoS protection)
✅ Edge network distributed
✅ Auto-scaling
5. PRIVACY-FIRST
✅ Zero data retention
✅ Tokens never stored
✅ Logs auto-expire (24-48h)
✅ GDPR compliant
6. DEPLOYMENT
✅ Private Git repo
✅ Env variable encryption
✅ Zero-downtime updates
✅ Instant rollback
⚔️ VS SPIC/PLAY INTEGRITY CHECKER SERVERS:
THEIR SERVERS:
❌ Public repos (spic-server, 1nikolas/*)
❌ Backend logic exposed
❌ Credentials format documented
❌ Self-hosted burden
❌ Unclear data handling
DEVICECHECKER:
✅ Private repo → logic hidden
✅ Proper secrets management
✅ Vercel enterprise security
✅ Zero-knowledge validation
✅ Privacy guaranteed
KEY ADVANTAGES:
1. Private backend → Protected from Google
2. Serverless → No persistent attack surface
3. Stateless → Zero data retention
4. Secrets isolated → Never exposed
5. Enterprise infrastructure → Vercel security
6. Zero-knowledge → Validate & forget
Security = Client + Server + OpSec
SPIC/Play Integrity Checker:
❌ Public everything
❌ Free intel to Google
❌ Privacy unclear
DeviceChecker:
✅ Private repos
✅ Proper opsec
✅ Privacy-first
✅ Enterprise security
This is secure apps in 2025. 💪
❤1
CLIENT-SIDE COMPARISON: SPIC/Play Integrity Checker vs DeviceChecker
❌ SPIC/PLAY INTEGRITY CHECKER - 10 CRITICAL FAILURES:
1. OBFUSCATION: None → 5min reverse engineering
2. REPOSITORY: Public → Free blueprint to Google
3. NAMING: Obvious → Auto-flagged
4. DISTRIBUTION: Play Store → Full surveillance
5. CREDENTIALS: Hardcoded plaintext → Easy extraction
6. NETWORK: Token forwarding → Red flag behavior
7. RATE LIMITING: Warning only → Device ban risk
8. DEBUGGING: Public issues → Free research for Google
9. ANTI-ANALYSIS: None → Open research lab
10. TRANSPARENCY: Misleading → Manipulation victim
✅ DEVICECHECKER - 10 SECURITY WINS:
1. OBFUSCATION: R8 + encryption → 10x harder analysis
2. REPOSITORY: Private → Zero Google access
3. NAMING: Generic (id.xms.devicechecker) → Stealth
4. DISTRIBUTION: Sideload → No surveillance
5. CREDENTIALS: Base64 + XOR → Protected
6. NETWORK: Clean validation → Less suspicious
7. RATE LIMITING: User protection built-in
8. DEBUGGING: Private channels → No leaks
9. ANTI-ANALYSIS: Root detection + anti-debug ready
10. TRANSPARENCY: Honest education → User empowerment
🎯 EVIDENCE:
• github.com/herzhenr/spic-android (public - exposed)
• github.com/1nikolas/play-integrity-checker-app (public - vulnerable)
• DeviceChecker: Private repo (protected)
❌ SPIC/PLAY INTEGRITY CHECKER - 10 CRITICAL FAILURES:
1. OBFUSCATION: None → 5min reverse engineering
2. REPOSITORY: Public → Free blueprint to Google
3. NAMING: Obvious → Auto-flagged
4. DISTRIBUTION: Play Store → Full surveillance
5. CREDENTIALS: Hardcoded plaintext → Easy extraction
6. NETWORK: Token forwarding → Red flag behavior
7. RATE LIMITING: Warning only → Device ban risk
8. DEBUGGING: Public issues → Free research for Google
9. ANTI-ANALYSIS: None → Open research lab
10. TRANSPARENCY: Misleading → Manipulation victim
✅ DEVICECHECKER - 10 SECURITY WINS:
1. OBFUSCATION: R8 + encryption → 10x harder analysis
2. REPOSITORY: Private → Zero Google access
3. NAMING: Generic (id.xms.devicechecker) → Stealth
4. DISTRIBUTION: Sideload → No surveillance
5. CREDENTIALS: Base64 + XOR → Protected
6. NETWORK: Clean validation → Less suspicious
7. RATE LIMITING: User protection built-in
8. DEBUGGING: Private channels → No leaks
9. ANTI-ANALYSIS: Root detection + anti-debug ready
10. TRANSPARENCY: Honest education → User empowerment
🎯 EVIDENCE:
• github.com/herzhenr/spic-android (public - exposed)
• github.com/1nikolas/play-integrity-checker-app (public - vulnerable)
• DeviceChecker: Private repo (protected)
❤2
XKM-2.0 Alpha Snapshot
If you think the UI is very different there is a reason :
1. Not all devices are mid-high-flagship, to make it lighter
2.Avoiding memory leaks
3. Avoid some bugs
But in this case, there may be changes that occur.
If you think the UI is very different there is a reason :
1. Not all devices are mid-high-flagship, to make it lighter
2.Avoiding memory leaks
3. Avoid some bugs
But in this case, there may be changes that occur.
🔥3
We are looking for additional testers for our XMS app project!
From XKM application and other applications.
Blacklist Phone Test : marble, beryllium.
Phone For Test : Root for XKM or NonRoot Phone 2019-2023 or 2024 Mid-End
New Phone : Need Android Studio for Logs (Only XKM)
Open to 10 members, if interested PM @GustyxPower , @Pavellc
From XKM application and other applications.
Blacklist Phone Test : marble, beryllium.
Phone For Test : Root for XKM or NonRoot Phone 2019-2023 or 2024 Mid-End
New Phone : Need Android Studio for Logs (Only XKM)
Open to 10 members, if interested PM @GustyxPower , @Pavellc
👍1
XChatAi | 1.1-Release
Released: 25/10/'25
By Xtra Manager Software Community
🔸 Download
🔸 Support Group
🔸 Support Channel
🔸 Log & Commit
🔸 Donate Me
Changelogs:
• On Screenshot
Notes:
• Report in Group if there is any problem with this application
#XtraManager #AiChat
#OpenSource #Apps
Released: 25/10/'25
By Xtra Manager Software Community
🔸 Download
🔸 Support Group
🔸 Support Channel
🔸 Log & Commit
🔸 Donate Me
Changelogs:
• On Screenshot
Notes:
• Report in Group if there is any problem with this application
#XtraManager #AiChat
#OpenSource #Apps
❤1
There are probably 2 Toys.. Eh 2 Apps that will come before 2026 arrives. XKM & XArchiver 2026 will be released
👏1
ID : Btw ada yang masih pake XChatAi,minta kesimpulan dan sarannya dong buat tugas kuliah soalnya mau di presentasikan minggu depan hehe
EN : Btw, is there anyone who still uses XChatAi? Please share your conclusions and suggestions for my college assignment because I'm going to present it next week, hehe
- Gustyx
EN : Btw, is there anyone who still uses XChatAi? Please share your conclusions and suggestions for my college assignment because I'm going to present it next week, hehe
- Gustyx
My Poco F5 on AOSP custom ROM for Mobile Legends is stuck at 90Fps, I tried to make a full spoof module to Xiaomi 17PM but it didn't work, when I changed it to Xiaomi 15 now it works 🔥
But I don't know whether it can be done on other ROMs or other devices that experience the same thing or not, I will release it later.
But I don't know whether it can be done on other ROMs or other devices that experience the same thing or not, I will release it later.