here . " I call it extreme vetting , " he told a raucous crowd during a foreign policy speech delivered in Ohio . Trump began the speech by rattling off a list of terror attacks and their casualties worldwide .
They first met at Yahoo while doing a security audit for the company . During this time , Koum was also part of a seminal security collective and think tank called w00w00 ( pronounced “ whoo whoo ” ) , a tight online community that used the old IRC chat service to trade ideas related to virtually any aspect of the field . Koum grew up in the Ukraine under Soviet rule before immigratinginspection.sensoryobserve.nato the US as a teenager , so he has some intimate familiarity with the challenges of maintaining privacy in the face of an intrusive government . But Koum says that the bigger force behind encrypting WhatsApp was Acton , a comparatively outgoing individual who grew up in Florida . “ Brian gets a lot of credit for wanting to do it earlier , ” Koum says of WhatsApp encryption .