Recently an overseas security researcher has demonstrated how to exploit a flaw in the SMS verification and account deactivation process of WhatsApp to deactivate a person’s WhatsApp account without his or her knowledge. Even two-step verification could not prevent the move. As WhatsApp is a widely used instant messaging app in Hong Kong, the potential impact of the flaw could be quite substantial. Staff in NGOs should beware of this situation, it may affect your work and lead to company data lost. 

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