Boris Johnson's mobile: What can hackers do with your phone number? That such a high-value mobile number has been publicly available for so long has raised cybersecurity concerns Updated The video will auto-play soon8Cancel Play now Never miss a thing from Belfast and beyond - sign up for FREE newsletter direct to your inboxInvalid EmailSomething went wrong, please try again later. Subscribe When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice. Thank you for subscribingWe have more newslettersShow meSee ourprivacy notice Boris Johnson’s personal phone number has been publicly available on the internet for 15 years,it has been revealed. Listed at the bottom of a 2006 press release, the number has reportedly been accessible online from the time the prime minister was shadow higher education minister through to his rise to Number 10.