Can your UPI App be hacked? Student exposes 3 loopholes — How to Identify & Stay Safe

INDIA — By BharatSecure Threat Intelligence Team · Updated May 25, 2026

Severity: MEDIUM | View Full Scam Details

Can Your UPI App Be Hacked? Student Exposes 3 Loopholes in 2026 India

UPI apps are now the lifeline of digital payments in India, but recent revelations show they can be hacked through surprising security gaps.

What Is the Can Your UPI App Be Hacked? Student Exposes 3 Loopholes Scam?

Unified Payments Interface (UPI) apps have revolutionized how millions of Indians make instant digital payments. The ease of use has made platforms like Google Pay, PhonePe, Paytm, and BHIM hugely popular. However, cybercriminals continually seek ways to exploit vulnerabilities within these apps to steal money or personal data. The scam titled "Can Your UPI App Be Hacked? Student Exposes 3 Loopholes" gained fresh attention in early 2026 when a Mumbai teenager publicly demonstrated how three specific loopholes could be used by fraudsters.

This scam primarily targets everyday users who may not be fully aware of the security protocols required while using UPI apps. Vulnerable groups include older adults, students, and small business owners who use UPI for daily transactions but may overlook subtle signs of fraud. With billions of UPI transactions happening monthly across India, the potential reach of such scams is vast.

The Reserve Bank of India (RBI) and the Indian Computer Emergency Response Team (CERT-In) have issued multiple advisories emphasizing UPI security. In 2025, RBI mandated multi-factor authentication and stepped-up fraud monitoring. Yet, incidents like the Mumbai case prove that while policy is evolving, hackers continually find new loopholes. The Indian government's Inter-Agency Centre for Cyber Crime (I4C) also tracks emerging digital payment fraud trends and recommends constant vigilance.

How This Scam Works — Step by Step

The fraud revolves around exploiting specific technical gaps inside UPI apps combined with social engineering tactics:

1. Initial Contact Through WhatsApp or SMS: The fraudster sends a fake message or WhatsApp text impersonating a bank employee or UPI app support, warning the victim about a "security issue" or "transaction failure." This message includes a fraudulent link or asks the user to call a number.

2. Tricking Victims Into Sharing UPI PIN or OTP: When the victim calls or clicks the link, they are guided through a process to “verify” their UPI PIN or enter an OTP supposedly sent for security reasons. In reality, this information is captured by the scammer.

3. Exploiting App Permissions Loopholes: The student discovered that certain UPI app permissions could be misused to bypass transaction warnings or tap into bank notifications. Using these loopholes, fraudsters can initiate unauthorized payments silently.

4. SIM Swap or Aadhaar Link Abuse: In some cases, scammers use social engineering to perform SIM swaps or misuse Aadhaar-linked mobile numbers – enabling easier bypass of OTP or biometrics authentication.

5. Draining Bank Accounts: Once armed with the victim’s UPI PIN, OTP, and app permissions, the fraudsters transfer money out in multiple small transactions to evade immediate detection.

The Mumbai teenager’s father lost ₹20,000 in such an attack, highlighting how even medium-risk vulnerabilities (rated 5/10) can cause significant financial harm.

Real Warning Signs to Watch For

• Unexpected messages claiming to be from your bank or UPI app urging urgent action.
• Links asking you to enter or verify your UPI PIN or OTP outside the official app.
• Calls from unknown numbers pretending to be bank officials asking for personal details.
• Requests to install apps or provide permissions unrelated to normal banking activity.
• Alerts of SIM card changes or suspicious mobile service interruptions.
• Transactions you did not initiate appearing as pending or processed.
• Unusual app behavior like sudden crashes or notification delays.

What Happens to Victims

Victims often suffer both financial loss and emotional distress. Losing ₹20,000 or more can be a severe blow for many Indian households, especially when funds are for daily expenses like groceries or tuition fees. Recovery through RBI’s Ombudsman or UPI’s dispute resolution is possible but can take weeks or months.

Further complications arise if Aadhaar or mobile SIM misuse occurs, risking identity theft or wider fraud beyond the immediate banking loss. The stigma and anxiety caused by the breach often lead to victims losing confidence in digital payments altogether—a backward step for India's digital economy.

What RBI and CERT-In Say

The RBI has repeatedly stressed never to share UPI PIN, OTP, or passwords with anyone, including “bank officials.” Its 1930 helpline helps report fraud and seek assistance. CERT-In recommends installing official UPI apps from trusted sources only, keeping devices updated, and avoiding unknown links.

The Indian government’s I4C unit runs awareness drives and encourages users to report cyber frauds promptly via cybercrime.gov.in. These agencies emphasize that UPI is secure if users follow safety protocols seriously.

How to Protect Yourself

1. Never share your UPI PIN or OTP with anyone — not over calls, SMS, or WhatsApp.
2. Use only official UPI apps and download them from trusted stores like Google Play or Apple App Store.
3. Do not click on suspicious links received via messages or social media.
4. Enable biometric authentication if your UPI app supports it.
5. Regularly monitor your bank and UPI transaction alerts.
6. Lock your SIM through your telecom provider’s app or portal to prevent SIM swaps.
7. Report any unusual activity immediately to your bank and through the 1930 cybercrime helpline.

What to Do If You've Been Targeted

1. Immediately block your UPI app or deactivate it temporarily.
2. Change your UPI PIN from within the official app or bank portal.
3. Contact your bank’s customer care and inform them of fraudulent transactions.
4. File a complaint with the cybercrime portal at cybercrime.gov.in.
5. Call the national cybercrime helpline at 1930 for guidance and support.
6. Request your telecom operator to block or reissue your SIM card if you suspect SIM swap fraud.
7. Keep all transaction messages, screenshots, and communication as evidence.

Frequently Asked Questions

Q: Can my UPI PIN be hacked through phone calls or messages?
A: Your UPI PIN cannot be directly hacked, but scammers use social engineering to trick you into revealing it or an OTP. Never share these details with anyone, regardless of who they claim to be.

Q: Will I get my money back if hacked on UPI?
A: RBI guidelines require banks to resolve reported fraud cases fairly. However, if negligence (like sharing PINs) is proven, refunds may be delayed or denied. Prompt reporting improves chances of recovery.

Q: How can I check if my UPI app was compromised?
A: Check your transaction history frequently. Look for unauthorized payments or app activity. If you notice anything suspicious, change your PIN immediately and alert your bank.

UPI scams exploit gaps in user awareness and app security, but with informed vigilance, you can protect your hard-earned money. Whenever you receive suspicious messages or calls, verify them first at BharatSecure.app — your trusted companion against digital fraud in India. Stay safe!