tonight breaking news. the worldwide hack. is your computer infected. the biggest cyberattack ever. the virus crippling hospitals and wiss across the globe and here at home. the hackers demanding a ranson. the race to stop the threat. the hostage situation inside an american hospital. an inmate there to be treated stealing an officer's gun and taking a nurse hostage inside of the emergency room. s.w.a.t. teams on the scene. trump's top cop, the president announcing a new fbi director is on the way. our cameras tracking the potential candidates. inside the inferno. the dramatic body cam video showing authorities entering a house on fire. the frantic rush to save the residence and the fashion

tragedy, kidnappers targeting carolina herrera, the ruthless result after a ransom was paid. and good evening. thanks for joining us on this saturday. i'm tom llamas. the cyberattack rolling across the globe. targeting governments, hospitals and major companies. security experts racing to fight back. hackers striking around 100 look at that. countries including right here in the u.s. locking up tens of thousands of computers, demanding ransom to free them up. tonight the computer wiz who may have stumbled on a way to disable the attack and the international hunt to catch the culprits before they strike again. abc's brian ross starts us off. >> reporter: the tally of victims tonight includes fedex and the united states and russia

and factories and phone companies across europe and hospitals in great britain where surgeries were cancelled. ambulances turned away and lives put at risk. >> it's a heinous crime. this hacking because they're putting people's lives at risk. >> reporter: the international cyberattack titled want to cry was announced when tens of thousands of targets simultaneously received this message that their computers were frozen. oops, your important files are encrypted followed by to pay a ransom of $300 or more to keep their files from being erased permanently. >> the reason this is hitting so many computers at once is they discovered a vulnerability in the most popular operating system in the world in microsoft vantage of it.ey're taking it's one that microsoft delivered a solution for but a lot of people haven't used it. >> reporter: as the attacks spread to more than a 100 countries the damage was contained today for the moment. when a computer programmer in great britain stumbled on to a

kill switch based on the work of this computer programmer in indiana who talked with us by skype. >> once the kill switch was activated the malware would do nothing. it would not carry out its infection or take for ransom all the files on that computer. >> reporter: law enforcement and intelligence authorities around the world led by britain's new computer security squad where we were recently given rare access are working to track down whoever was responsible. with russian organized crime considered a leading suspect. >> people trying to steal money. the digital world gives people an opportunity to do that. >> reporter: ironically experts believe the attack was carried out with the help of a program first developed by u.s. intelligence to compromise the computers of terrorists and foreign adversaries. >> they lost it. somebody stole the information, published it on the internet and now is being used against victims in the united states and elsewhere.

>> and brian, we heard your report about the kill switch but the problem isn't over? >> reporter: that's right. u.s. officials believe american companies dodged the bullet in this case because most had upgraded their computers to close the vulnerability and the quick activation of the kill switch. also helped. officials say they believe the hackers are preparing a second wave of attacks without a kill switch that could come any time soon tom. >> what's advice from our experts to our viewers to protect themselves? >> reporter: anybody who uses the microsoft system should download any upgrades including the patch that covers this vulnerabili vulnerability. tom. >> thanks so much. next to the breaking news, a tense hospital standoff outside chicago. a jail inmate there as a patient wrestling a gun from a guard and taking a nurseos

police and s.w.a.t. teams rushing to the scene. no one allowed in or out of the building. crisis negotiators there as well. abc's ron claiborne with the details coming in. >> reporter: tonight heavily armed s.w.a.t. teams around a hospital. an armed gunman holding a hospital employee hostage. these photos taken from inside the hospital. showing officers armed with rifles, crouched behind a wall taking aim. another standing guard. the hospital on lockdown. >> subject with a gun are. >> reporter: we spoke to a woman visiting her father, a patient when it happened. a nurse ordering them to stay inside. >> my daughter and i tried to leave and the nurse came down and yelled get back in your room. i'm like we have to get home and she said there's an armed intruder in the hospital and you have to stay behind locked doors. >> reporter: the chaos broke out around 2:00 p.m. eastern time when a jail inmate being treated at the hospital grabbed the gun of an officer who was guarding him. >> units responding.

to delnor. a handgun glock 21 handgun. >> reporter: the gunman took several hostages at gunpoint but was finally cornered with only one hostage. outside of that hospital 40 miles west of chicago on going at this hour. s.w.a.t. teams remain poised. this situation there still very tense. tom. >> ron, thanks so much. we move on to the fall out after the firing of james comey. comey emerging from his home in virginia four days after seen on tv that the president had let him go. at the same time candidates who replace him lining up for interviews. at the justice department tonight. gloria rivera staking them out. >> reporter: president trump sending his search for a new fbi director into overdrive. >> outstanding people that are very well known. highest level. so we could make the best decision. >> reporter: suggesting it could be decided by next week.

>> reporter: comey spotted leaving his home. sources telling abc news he is furious at how the firing has been handled. this as candidates to replace him arriving at the department of justice. >> were you asked if you could no comment. rve the president? >> no comment at all. >> reporter: conducting those interviews deputy attorney general rod rosenstein and jeff sessions, sessions removing himself from investigations into whether the trump campaign colluded with russia's meddling in the election and taking a role in choosing who is in charge of the fbi's case. >> you cannot stop the men and women of the fbi from doing the right thing. >> reporter: one of today's candidates andrew mccabe contradicted the white house claim about the ousted director in a hearing on capitol hill. >> is it accurate the rank and file no longer supported director comey. >> no, sir. that is not accurate. >> reporter: republican senator was asked about the russia investigation. >> it is a legitimate area of inquiry.

repeatedly disagreed. >> i said, you know, this russia thing with trump and russia is a made-up story. >> reporter: should a special prosecutor be appointed and >> reporter: democratic senators calling for a special prosecutor into russia. before any vote on comey's replacement. >> i will vote against any confirmation of an fbi director unless there is support for a special prosecutor. >> gloria is live at the justice department. tonight a group of current and former fbi agents pushing a candidate, a name they want president trump to consider. >> reporter: the fbi agent's association is endorsing mike rogers, a member of congress and in terms of next steps the white house says president trump will himself meet with finalists once this very long list narrows. tom.

breaking news from overseas, a new provocation from north korea. they have conducted a new missile test. that missile staying in the air 400 miles. it is the seventh test since donald trump took office. the president has been briefed on the launch. president trump was addressing the graduates at liberty university in virginia. his advice to the graduates about dreamers and critics. a reminder to himself after a tough week in washington. david wright there today. >> reporter: tonight the president is doing his best to turn the page on the roughest week yet. holed up in the white house since sunday, a few days before he fired the fbi director, trump went to liberty university today to give the commencement address. his advice to the graduates -- >> no one has ever achieved anything significant without a chorus of critics explaining why

it can't be done. >> reporter: could be a version of the pep talk he's giving himself. >> relish the opportunity to be an outsider. embrace that label being an outsider is fine. embrace the label because it's the outsiders who change the world. >> reporter: the president is clearly frustrated with white house messaging in an interview airing tonight on fox news, he backed up his beleaguered spokesman only so much. >> he's doing a good job but gets beat up. >> will he be there tomorrow? >> he's been there from the beginning. >> reporter: even floating the idea of getting rid of the briefings all together. >> we don't have press conferences. and we do -- >> you don't mean that? >> just don't have them unless i have them every two weeks and do them myself. we don't have them. i think it's a good idea. >> reporter: today the crowd at liberty university gave trump a warm reception but even here some doubters. >> what do you think of his

decision to fire the fbi director? >> i think it was shocking and a level of arrogance that i have never seen before. i think it was highly impulsive. >> i wonder if he listens to his advisers. i don't know about all the things he does sometimes. i agree with his concepts and what he stands for but the execution seems to be sometimes a little bit room for improvement. >> david, the president hinted there might be tapes of his conversations with former fbi director comey but refused to say more. about the recorded conversations but we know recorded conversations are a part of white house history? >> there's a dangerous precedent for it. all the way back to fdr many presidents have recorded their meetings with some exceptions but ever since richard nixon and the

>> tomorrow the bombshell firing of the fbi director james comey. next to the heroic effort to save a family from their burning home. three police officers the first to arrive trying to make it up the stairs but turned back by the flames. three children lost their lives in the fire but family members and firefighters got several others out. abc's kenneth moton on the fire outside of houston. >> reporter: tonight, a terrifying look as police officers rush inside this monster house fire frantically searching for three children. >> engine 64 currently en route johnson road for structure fire. multiple callers to report the possible victims trapped. >> reporter: firefighters still racing to the scene just outside of houston friday morning. a body camera attached to this officer. he and two others run into the burning house. staring down a wall of flames, the first responders scramble to find something to cover their faces.

>> anybody inside? >> reporter: they tried to move in, but quickly realized there was nothing they could do. >> there ain't no way. >> reporter: the officers rush out desperate for air. >> watch out, roof's collapsing, up right there. >> reporter: frustrated, they refuse to give up, grabbing a ladder to get to a second floor window. >> break it out. >> reporter: fire investigators say in the home, four adults and four kids. siblings ages 13 to five. a 10 year old boy the only child to survive. the survivors including the mother of the three children killed are recovering. those officers were also treated. the cause of the house fire still under investigation. tom. >> sad situation for that family. kenneth. thank you. next to the extreme weather in the east. three tornados confirmed in louisiana. there's one of them. the cleanup under way and heavy rain moving up the coast, flooded streets. in ocean city, new jersey.

rob, this is an unusually strong storm for this time of year correct? >> reporter: it is tom and feels more like march than may. the rain at times blowing sideways and it's intensifying. take a look off the coast of new jersey and the rain shield towards albany and raining heavily there and coastal flooding an issue. the rain will end from west to east. hartford, providence and boston you'll see it intensify and 10:00 a.m. tomorrow morning for mother's day a break in new york but wrap around instability and more showers throughout the day. certainly going to be a better holiday. some moms will have to bring their own sunshine unfortunately. tom. >> thanks so much. still much more ahead on "world news tonight" this saturday. the violent road rage in beverly hills. a man ramming a car with a shopping cart. the driver pinned the man against the wall and taking off. what may have caused the dangerous confrontation.

popular brand of baby wipes and concerns over mold. and the fashion icon tragedy. carolina herrera's nephew targeted by kidnappers. why the designer is angry at the venezuelan government. stay with us. the bottom line is, for your goals, this is a strategy i'd recommend. this actually makes sense. now on the next page you'll see a breakdown of costs. what? it's just... we were going to ask about it but we weren't sure when. so thanks. yeah, that's great. being clear and upfront. multiplied by 14,000 financial advisors, it's a big deal. and it's how edward jones makes sense of investing. will you be ready when the moment turns romantic? cialis for daily use treats ed and the urinary symptoms of bph. tell your doctor about your medicines, and ask if your heart is healthy enough for sex.

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they returned to their office. police say the gang asked for a ransom. but despite the families making the payment, the two were found friday dead inside a truck. carolina herrera posting to social media. our only hope is that the tragic assassination of our nephew and his colleague will serve to mitigate the terrible carnage and murders committed against our youth in venezuela. the results must be respected. the communist dictatorship must go. economic crisis has led to ramped crime in the south american nation. since january there have been almost 400 kidnappings nearly as many as all of last year total. police say the kidnappers made them call a housekeeper to put jewelry and money into a bag they later picked up. authorities are looking for four men who they say are all armed. tom. >> eva, thank you.

when we come back, the scary moment at the ballpark. the big leaguer hit by a pitch taking a 93-mile-per-hour fast ball straight to the face. how he's doing tonight. and why arnold schwarzenegger met with the former president and first lady. ♪ that's life. you diet. you exercise. and if you still need help lowering your blood sugar... ...this is jardiance. along with diet and exercise... jardiance lowers blood sugar and a1c in adults with type 2 diabetes. jardiance is also the only type 2 diabetes treatment with heart- proven to reduce the risk of cardiovascular death in adults with type 2 diabetes and cardiovascular disease. jardiance can cause serious side effects, including dehydration. this may cause you to feel dizzy, faint, or lightheaded,

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as americans prepare to celebrate our mothers, one mom who finally got to cross the commencement stage and the fellow graduate who inspired her. >> reporter: of all the lessons she learned during college, the most impactful came from a fellow graduate, her mother. >> you can do anything you put your mind to. >> reporter: karen dropped out 30 years ago to take care of her oldest daughter. >> i was like mom, you have to go back. >> reporter: with that urging she finally returned

finish what she started and fulfill her mother's dream. >> the lord talked to me and said girl, you can do this and i did. >> reporter: at times it was a struggle for the 53-year-old. >> the whole new environment from what she was used to back in the day. >> reporter: karen managed to earn her degree in sociology graduating last week. ♪ >> reporter: and in the process leaving some inspiring footsteps her daughter is following in as she crosses the stage with her diploma this mother's day weekend. ♪ >> i'm so proud of you. >> reporter: marci gonzalez, abc news, los angeles. the perfect story. we thank marci this morning. "gma" and this week in the morning. i'll see you back tomorrow night. have a great weekend. good night.

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