Zuckerberg's leaked number suggests he uses WhatsApp rival Signal

A security researcher has claimed that Facebook CEO Mark Zuckerberg uses Facebook owned-WhatsApp's rival app Signal after his phone number appeared in a data leak of 53 crore Facebook users. Signal trolled Zuckerberg by tweeting, “With the May 15th WhatsApp Terms of Service acceptance deadline fast approaching, Mark leads by example.” Details of two other Facebook Co-founders were also leaked.