I'll give you a practical detection checklist you can run on your Samsung devices right now. Here's what to look for:
---
## **Quick Self-Assessment (5 minutes)**
| Symptom | Where to Check | What It Means |
|---------|---------------|---------------|
| **Battery draining fast** | Settings → Battery → Usage → Last 24h | Malware often runs in background |
| **Phone hot when idle** | Feel back of device | CPU working unexpectedly |
| **Unknown apps** | Settings → Apps → Sort by "Last used" | New/abandoned apps = red flag |
| **Strange data usage** | Settings → Connections → Data usage | Background exfiltration |
| **Pop-ups/redirects** | During normal browsing | Browser hijacking/malware |
---
## **Physical Check (2 minutes)**
1. **Dial
*#06#** → Confirm IMEI hasn't changed
2. **Check for physical tampering**: USB port debris, loose buttons, unusual logos
3. **Boot detection**: Phone boots faster/slower than usual?
---
## **Android Security Audit**
``
bash
# Via ADB (from your laptop):
adb shell dumpsys battery | grep -E "(status|health|level|pct)"
adb shell pm list packages -3 | wc -l # Should be < 100 for normal use
`
Or use **Settings**:
- **Security** → **Device care** → **Battery** → Check for "Apps draining battery"
- **Apps** → **Permission manager** → Review "Phone", "SMS", "Location" permissions
- **Google** → **Security** → **Play Protect** → Scan now
---
## **Network-Level Detection (from your laptop)**
`
bash
# Check what your phone is connecting to:
# On same WiFi, run:
sudo tcpdump -i any host -w phone.pcap
# Look for connections to:
# - Suspicious countries (not US/Canada/Mexico)
# - Port 443/80 to unknown domains
``
---
## **What to Check Next**
1. **Google Account Activity**:
https://myaccount.google.com/security → "Your devices" → Review sessions
2. **Find My Device**:
https://www.google.com/android/find → Check last location/timestamp
3. **Samsung Knox**: Settings → Biometrics and security → Knox
---
**Red flags that require immediate action:**
- Unfamiliar accounts in "Security" section
- Remote lock/wipe option showing "Last used X minutes ago" (not you)
- Location shows you somewhere you haven't been
- Unknown device admin apps (Settings → Biometrics → Device admins)
Would you like me to help you run any specific check? I can guide you through the ADB inspection or help analyze network traffic if you capture it.