Zak Kuo News Today : Breaking News, Live Updates & Top Stories | Vimarsana

government targets. ukraine's president volodymyr zelenskyy urging extra caution on this holiday. >> [interpreter] we are sure to retaliate against any former russian tara. but please tomorrow be sure to follow security rules. please respect the curve. you act on the air right sirens. pay attention to official announcements, and remember, we altogether have to get to our victory. >> a lot more from ukraine in just a moment. ♪ ♪ ♪ but first, one of most powerful democrats in the u.s. congress will not be heading back to capitol hill next year. newly-drawn new york congressional ...

Head of security at twitter, but now he is a whistleblower, and he says twitter's security problems are so grave that they are a risk to national security and democracy. >> i think twitter is a critical resource to the entire world. it is an important platform. >> he's handed over information about the company to u.s. law enforcement agencies, including the fcc, sec, and the department of justice. >> can i ask your name a number. >> zak kuo is ever known in the hacking community as much. he's been a renowned cybersecurity expert for decades. >> his roots are in hacking, figuring out how comput...