India, Feb. 1 -- Meta's WhatsApp messenger service fears that around 90 users, including journalists and civil society members, were suspected to be the targets of a spyware campaign conducted by an Israeli spyware company called Paragon Solutions.

WhatsApp spokesperson told NBC News the attack targeted a number of users including journalists and members of civil society "across over two dozen countries, particularly in Europe."

The spokesperson further said that Paragon Solutions has used a vector, a method to illegally access a network, to target the users and that "the vector involved using groups and sending a malicious PDF file."

Following the attempted attacks, WhatsApp reportedly sent a cease-and-desist letter to the company.

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