Android Hacked via Telegram? 5 Steps to Remove Malware & Secure Your Phone NOW

By CyberDudeBivash · Mobile Security · Updated: Oct 26, 2025 · Apps & Services · Playbooks · ThreatWire

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TL;DR — Do these 5 things in order

1. Go offline & Safe Mode (airplane mode, then reboot to Safe Mode) to stop the malware running.
2. Uninstall the culprit (revoke “Install unknown apps” for Telegram; remove shady apps; disable device admin).
3. Scan & patch (Play Protect + a reputable mobile security app; update Android & apps).
4. Lock accounts & money (change passwords from another device, add 2FA, call bank if any charges).
5. Reset if needed (encrypted factory reset + restore from a clean cloud backup).

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Table of Contents

1. Step 1 — Go Offline & Enter Safe Mode
2. Step 2 — Remove the Malware & Kill Sideloading
3. Step 3 — Scan, Patch & Clean Telegram
4. Step 4 — Secure Your Accounts & Money
5. Step 5 — Reset (If Needed) & Restore Safely
6. Future-Proof: 9 Android Security Habits
7. FAQ

Step 1 — Go Offline & Enter Safe Mode (2 minutes)

• Turn on Airplane Mode (disable Wi-Fi & mobile data). This cuts the malware’s network access.
• Reboot to Safe Mode: press & hold the power button → tap and hold “Power off” until you see “Reboot to Safe Mode” → confirm.
  (On some devices: power button → on-screen power menu → long-press Power Off. If your OEM differs, search “<device> Safe Mode”.)

Step 2 — Remove the Malware & Kill Sideloading

1. Uninstall suspicious apps: Settings → Apps → See all apps → sort by Last used or Install date. Remove unknown tools, “cleaners,” “updaters,” and any app installed right before issues began.
2. Disable Device Admin if an app blocks uninstall: Settings → Security → Device admin apps → uncheck the suspicious app → uninstall it.
3. Revoke “Install unknown apps” from Telegram: Settings → Apps → Telegram → “Install unknown apps” → toggle Off.
4. Revoke Accessibility/Notification abuse: Settings → Accessibility → Installed apps → disable anything you don’t trust. Then Settings → Notifications → Notification access → turn Off for unknown apps.

Step 3 — Scan, Patch & Clean Telegram

• Update Android: Settings → System → System update → install all updates.
• Run Google Play Protect: Play Store → your profile → Play Protect → Scan.
• Add a reputable security app (from Play Store) to catch banking trojans, spyware, and stalkerware.
• Clear Telegram downloads/cache: Telegram → Settings → Data & Storage → Storage Usage → Clear cache. Then review the Downloads folder in Files and delete unknown APKs/ZIPs.
• Check default browsers: Settings → Apps → Default apps → set Chrome/Edge/Samsung Internet; reset browser settings to default; clear site data.

Step 4 — Secure Your Accounts & Money

• On a different, clean device: change passwords for email, banking, crypto, and shopping accounts.
• Enable 2-factor authentication (prefer app-based codes or passkeys; avoid SMS where possible).
• Review bank/UPI/card transactions; set real-time alerts for payments, new payees, and transfers.
• If you shared card/UPI details or see charges: call your bank, request a new card, and enable transaction alerts.
• Revoke suspicious sessions: check Google Account → Security → Your devices & Signing in → sign out of unknown devices.

Step 5 — Reset (If Needed) & Restore Safely

• If malware persists, perform an encrypted factory reset: Settings → System → Reset options → Erase all data. Back up photos/contacts first; avoid restoring unknown APKs or third-party backup files.
• After reset, update Android and apps before restoring data; reinstall apps from the Play Store only.
• Re-enable 2FA and sign in again; watch for new prompts or login alerts in the first 48 hours.

Future-Proof: 9 Android Security Habits

1. Never install APKs received in Telegram/DMs unless you’re the developer and you verify signatures.
2. Keep Install unknown apps = Off for all messengers and browsers.
3. Lock Telegram with a passcode; disable auto-download for unknown chats/channels.
4. Update Android and apps weekly; turn on automatic updates.
5. Use hardware keys / passkeys for email, banking, and crypto.
6. Enable Google Play Protect and Safety Center alerts.
7. Avoid “optimizer/cleaner” apps; they’re often adware or worse.
8. Back up photos/contacts to a trusted cloud; don’t back up APKs from infected phones.
9. If you travel or lose sight of the phone, review sessions and change passwords on return.

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• Account lock-down (banking, email, crypto) with 2FA
• Clean restore + prevention settings

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FAQ

How do I know which app is malicious?

Look for apps installed right before problems began, those with Install unknown apps permission, Accessibility control, or Device Admin rights. Uninstall anything you don’t recognize.

Do I need antivirus on Android?

Good hygiene + Play Protect go a long way. A reputable mobile security app adds phishing/banking-trojan detection and anti-stalkerware.

Will factory reset remove everything?

Yes, it wipes apps and data. Restore only from clean cloud backups (Google Photos/Contacts), not old APKs or third-party backup files.

Could someone steal my Telegram account?

Yes if they captured your SMS/OTP or session. Enable Telegram’s two-step verification (password), check Active Sessions, and terminate unknown devices.

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