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  • A new WhatsApp OTP scam could allow the hijacking of users’ accounts

A new WhatsApp OTP scam could allow the hijacking of users’ accounts

Pierluigi Paganini May 30, 2022

Experts warn of a new ongoing WhatsApp OTP scam that could allow attackers to hijack users’ accounts through phone calls.

Recently CloudSEK founder Rahul Sasi warned of an ongoing WhatsApp OTP scam that could allow threat actors to hijack users’ accounts through phone calls.

The fraudulent scheme is simple, threat actors make a phone call to the victims to trick them into making a call at a phone number starting either with 405 or 67. Sasi explained that after a few minutes their WhatsApp account is logged out and attackers are able to take over them.

WhatsApp hack

The number dialed by the victims is a service request for Jio and Airtel to do Call Forwarding when a mobile user is busy. Using this scheme, the attacker tricks the victims into enabling the call forwarding to a number under their control. Then the threat actors start the WhatsApp registration process for the victim’s number asking to send the OPT via phone call.

Since the phone is busy, the phone call is directed to the attacker’s phone, allowing him to gain control of the victim’s WhatsApp account.

At this time, this fraudulent schema is targeting only WhatsApp users in India, but experts warn that this kind of attack could be observed in almost any country where a similar forwarding service is available.

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Pierluigi Paganini

(SecurityAffairs – hacking, WhatsApp)

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