A computer programmer has revealed how he was able to hack into Tinder accounts using just a phone number. Anand Prakash exposed a vulnerability in software which allows users of the dating app to conveniently log in to their accounts without entering a password. The 24-year-old said hackers could gain access to a Tinder account “within seconds” if they knew the mobile phone number the victim used to log in to the app via Facebook’s Account Kit. “If the hacker knew the victim’s phone number used to sign in they could have… Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. He said the hacker would have “full control over the victim’s account”, gaining access to their private chats, personal information and allow them to interact with other users.