How to Protect Your WhatsApp and Telegram from Hackers: An In-Depth Guide

Quadri Adejumo
By
Quadri Adejumo
Senior Journalist and Analyst
Quadri Adejumo is a senior journalist and analyst at Techparley, where he leads coverage on innovation, startups, artificial intelligence, digital transformation, and policy developments shaping Africa’s...
- Senior Journalist and Analyst
7 Min Read

With digital communication now central to our personal and professional lives, knowing how to protect your WhatsApp and Telegram from hackers has never been more important.

Hackers target these apps to steal personal data, impersonate users, scam contacts, and even intercept sensitive business communications. The good news is that you can stay ahead of them. By enabling the right security features, you can protect your accounts and reduce the risk of hacking attempts.

This guide provides a comprehensive roadmap to help you secure WhatsApp and Telegram, covering everything from basic account protection to advanced strategies that even cybersecurity professionals use.

Why Hackers Target WhatsApp and Telegram

Understanding why hackers focus on these apps helps you see the scale of the threat.

  • Massive User Base: Together, WhatsApp and Telegram have billions of active users, making them irresistible targets.
  • Rich Data Sources: Personal messages, shared documents, bank details, and authentication codes often pass through these apps.
  • Business Communication: Many SMEs in Africa, Asia, and Latin America now run sales and customer service on WhatsApp and Telegram.
  • Identity Theft: A hacked account allows criminals to impersonate you and scam friends, family, or customers.

How Hackers Break into WhatsApp and Telegram

Here are the most common attack methods you must guard against:

  • SIM Swapping: Hackers trick your mobile provider into transferring your phone number to their SIM card.
  • Phishing Links: Fraudulent links sent via SMS, email, or chats steal your login details.
  • Fake Apps and Malware: Downloading unofficial WhatsApp or Telegram versions can infect your phone with spyware.
  • Social Engineering: Hackers pretend to be tech support, family, or colleagues to trick you into sharing sensitive information.
  • Cloud Backup Exploits: Weakly protected backups (e.g., on Google Drive) are vulnerable to breaches.

Security Features to Enable Immediately

Both apps offer built-in security features that most users ignore. Here’s how to set them up:

1. Two-Step Verification (2FA):

  • WhatsApp: Go to Settings → Account → Two-step verification → Enable.
  • Telegram: Settings → Privacy and Security → Two-step Verification. This adds a PIN code for logins.

2. Fingerprint/Face ID App Lock: Prevents unauthorized access if your phone is stolen.

3. Secret Chats (Telegram): Offers end-to-end encryption with no cloud backup.

4. Encrypted Backups (WhatsApp): Protects your chat backups with a password or encryption key.

Best Practices for Protecting WhatsApp

WhatsApp is the most targeted messaging app in Nigeria, India, and Brazil — here’s how to defend yourself:

  • Regularly review linked devices in WhatsApp Web/Desktop.
  • Never share verification codes, even with people you trust.
  • Update WhatsApp frequently — every update patches potential vulnerabilities.
  • Restrict profile visibility (Settings → Privacy) to reduce exposure to strangers.
  • Log out from public computers immediately after use.

Best Practices for Protecting Telegram

Telegram offers more flexibility but requires careful setup:

  1. Enable Two-Step Verification with a strong password, not just a PIN.
  2. Review Active Sessions (Settings → Privacy and Security) and terminate unknown devices.
  3. Use Secret Chats for sensitive discussions — these leave no trace on Telegram’s servers.
  4. Restrict who can add you to groups or channels to avoid spam attacks.
  5. Turn off automatic media downloads to reduce the risk of malware.

Signs That Your Account May Be Hacked

Early detection can save you. Watch out for:

  • Messages you didn’t send appearing in your chats.
  • Friends or contacts receiving scam messages from your number.
  • Strange devices showing in your linked/active sessions.
  • Being logged out suddenly without explanation.
  • Unusual battery drain or phone overheating (possible spyware).

What to Do if You’re Hacked

If you suspect a breach, act fast:

  • Log out of all devices via account settings.
  • Reset your PIN and password immediately.
  • Contact WhatsApp/Telegram support to report unauthorized access.
  • Alert your contacts to ignore suspicious messages.
  • Secure your SIM card — contact your network provider to block unauthorized swaps.
  • Check your email and cloud accounts for unusual activity.

FAQs on How to Protect Your WhatsApp and Telegram from Hackers

Why do hackers target WhatsApp and Telegram?

Hackers target these apps because of their massive user base and valuable data. From personal conversations to business transactions, WhatsApp and Telegram often contain sensitive information that can be exploited for fraud or identity theft.

What is the most effective way to protect WhatsApp from hackers?

The most effective way is to enable two-step verification, regularly review linked devices in WhatsApp Web, never share your verification codes, and update the app frequently to patch vulnerabilities.

How can I secure my Telegram account from hackers?

To secure Telegram, enable two-step verification, check active sessions often, use Secret Chats for private conversations, and adjust your privacy settings to restrict who can add you to groups.

What are signs that my WhatsApp or Telegram has been hacked?

Warning signs include strange messages sent from your account, being logged out unexpectedly, unknown devices in your account settings, or contacts reporting suspicious messages from your number.

Can hackers access WhatsApp and Telegram through SIM swap attacks?

Yes. In SIM swap scams, hackers trick your mobile provider into transferring your number to their SIM card, giving them control of your accounts. Always add SIM card locks and alert your provider if you suspect tampering. Knowing how to protect your WhatsApp and Telegram from hackers is very important.

Senior Journalist and Analyst
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Quadri Adejumo is a senior journalist and analyst at Techparley, where he leads coverage on innovation, startups, artificial intelligence, digital transformation, and policy developments shaping Africa’s tech ecosystem and beyond. With years of experience in investigative reporting, feature writing, critical insights, and editorial leadership, Quadri breaks down complex issues into clear, compelling narratives that resonate with diverse audiences, making him a trusted voice in the industry.
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