Signal sees onslaught of users as WhatsApp introduces new privacy policies Signal sees onslaught of users as WhatsApp introduces new privacy policies Messaging app Signal has witnessed a sudden burst of new users days after WhatsApp announced its new privacy policy. advertisement HIGHLIGHTS Signal has witnessed a sudden burst of new users days after WhatsApp announced its new privacy policy. WhatsApp changed its terms of service and introduced new policies. Signal, the encrypted messaging app, struggled to generate verification codes due to the onslaught of new users. Messaging app Signal has witnessed a sudden burst of new users days after WhatsApp announced its new privacy policy. Scores of users thronged to Signal after WhatsApp changed its terms of service and introduced new policies. Signal, the encrypted messaging app, struggled to generate verification codes due to the onslaught of new users.