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Twitter CEO Jack Dorsey says "we're ready to question everything" about the social networking site that has been overrun by spam, abuse and misinformation.Dorsey says he and his team are working extensively behind the scenes to stamp out some of the harassment and hate speech that has generated bad headlines lately.But it is a long-term effort, he says, and he is reluctant to commit to an exact timetable for certain changes to Twitter's foundation.In twelve years, "we've changed a lot. But we haven't changed the underlying fundamentals," Dorsey told CNN in an in-depth interview at the company's headquarters on Friday.The basic fundamentals are what he is examining now. For instance: What does Twitter incentivize its users to do?"Every product decision we make is 'telling' them to do something," Dorsey said.So he is thinking about how to help users follow topics and hashtags, not just people."We are aware of some of the silos and how we're isolating people by only giving them crude tools to follow accounts. We need to broaden our thinking and get more back to an interest-based network," he said.Related: Twitter's Jack Dorsey: 'We are not' discriminating against any political viewpointDorsey is also rethinking how follower counts and "likes" on posts are displayed, because the race to gain followers and likes may encourage outrageous behavior.His view is that Twitter needs to be much more "transparent" and open about its actions. But that transparency, some of which was on display during Dorsey's media tour this month, means asking questions without actually answering them.Among the questions Dorsey asked in the CNN interview: "How do we earn peoples' trust?" and "How do we guide people back to healthy conversation?"While he may get credit for asking big, philosophical questions about how his site operates, Dorsey remains vulnerable to criticism about Twitter's inaction.He responded to that by saying "we are taking a lot more action than we ever have in the past." But much of the action is invisible to users, he asserted.For example: The disabling of bot networks and other suspicious accounts. Dorsey said Twitter challenges "10 million accounts every single week to see if they're automations or humans," and takes action accordingly.But Twitter's stock plunged last month when its quarterly earnings report showed a decline in user growth, which the company attributed to its efforts to clean up the site, akin to gardeners removing weeds.Nonetheless, Dorsey is committed to what he calls "conversational health" -- the quality of an exchange on Twitter -- which he is trying to measure with the help of two research groups. He said investors should take a look at the long-term trends: "We see this as necessary and right and we believe in it and we have conviction around it, and we'll take the hit in the short term."Related: Twitter is purging suspicious accounts from your follower countHe also asserted that "over the short term, a lot of this work is invisible, and over the long term, it starts to add up."As for some of the specific changes, like a rethinking of the like button, Dorsey was reluctant to talk about a timeline."We're looking and thinking about all these things right now," he said. So: By the end of the year? "I worry about a time frame like that," he said, "because we also need to take into consideration -- we're a small company. I mean we, in comparison with our peers, we're a small company, but we have this outsized impact and I believe, importance."Later, he added, "We have to understand first the problem we're trying to solve, like what incentives we actually want to drive; not just what we want to remove, but what we want to drive." But he said he knows he wants incentives "that encourage people to talk and to have healthy conversation." 3824

Twitter is still trying to figure out who is behind that high-profile hack.Tweets were sent out from verified accounts, saying they would send money to anyone who sent cash to a bitcoin address.Experts say whoever is behind it possibly used "social engineering," sending phishing emails, texts or phone calls to Twitter employees to get gain access. 357

UPDATE: MARCH 13, 2020The County of San Diego government website on Friday is reporting eight presumptive positive cases of Coronavirus.The new number is a jump from Thursday's announcement of five new cases. Those cases include individuals on repatriation flights (2/5/20 and 2/7/20) from Wuhan, China, or from the Grand Princess cruise ship, who were placed under federal quarantine at Marine Corps Air Station (MCAS) Miramar.No other details were reported at this time. -----SAN DIEGO (KGTV) — San Diego leaders say there have been five new cases of the novel coronavirus in the county.The cases come as a Marine stationed at MCAS Miramar became the second confirmed case of coronavirus in the county by military sources. At last report, the county's first coronavirus patient was doing well.Wilma Wooten, County public health officer, detailed the new cases as:A female in her 70s who was reported to the county by the CDC. The woman was on the Grand Princess cruise ship that arrived in Oakland on Monday. The woman is at home in isolation.A male in his 50s with a history of travel to Colorado.A male in his 40s who may also have a history of travel to Colorado. He is at home in isolation.A female in her 70s who was in federal quarantine at MCAS Miramar after travel on the Grand Princess cruise ship. The woman is in the hospital in isolation.A man in his 50s who is currently hospitalized. The man may have been a case of community transmission.In addition, a public health order starting Friday will ban any mass gathering of 250 people or more through the end of March, San Diego County Supervisor Nathan Fletcher said. Gatherings that are under that limit are being asked to limit social distance to six feet at events."We are strongly recommending that they cancel all non-essential travel, that they prioritize staying in the comfort and security of their own homes, and they do everything they can to avoid large crowds," said Nick Yphantides, San Diego County chief medical officer.Mayor Kevin Faulconer also issued a State of Emergency for the City of San Diego to take advantage of financial assistance in response to combating the virus' spread."Folks we have been planning for this for decades ... and there are certain data driven triggers that give us the ability to know ahead of time if our system is stressed," Yphantides added.The county has installed about 114 hand washing stations around the region. Another 54 stations are being installed by MTS transit centers as well.Leaders also issued a new advisory to seniors 65 and older and to people with chronic illnesses to cancel non-essential activities and avoid big crowds as much as possible.RELATED: What's been canceled, postponed in San Diego, nationally due to coronavirusTo address those experiencing homelessness in the county, about 90 motel rooms have been secured to house and shelter the displaced and homeless who are infected. The goal is to avoid crowding hospitals. A task force has also been handing out hygiene kits to the local homeless population to protect against the virus.Health officials say the risk to the general public remains very low.Thursday, a fourth flight carrying passengers from the Grand Princess cruise ship was expected to land at MCAS Miramar. The base has already received about 400 passengers over multiple flights for quarantine.RELATED: Disneyland, California Adventure to close through March due to coronavirusSymptoms for the coronavirus include fever, cough, and shortness of breath or difficulty breathing. Health experts encourage people to cover their cough or sneeze, wash their hands thoroughly and often, stay home if feeling ill, avoid touching their face and mouth, and clean surfaces often to protect themselves against the virus. 3774

United Airlines has established a new policy for transporting pets in cargo holds that includes banning dozens of dog breeds and several types of cats.The new policy takes effect June 18, when the carrier will resume reservations for its PetSafe program. The airline temporarily stopped the program in March after a series of high-profile incidents involving pets that were lost and others that died on United flights.United said it will be working with American Humane, an animal-welfare group, to improve the well-being of pets that travel on United, both in the cargo hold and in the cabin. Through the rest of the year it will continue to “make enhancements as needed to further improve the safety and care of animal transportation,” United said. 773

VALLEY CENTER (KGTV)- A former North County school security guard was sentenced Thursday after he was found guilty of sending inappropriate pictures to children online. Steven Lloyd Duncan was arrested by the Internet Crimes Against Children Task Force in December 2018. Six months later he was sentenced to four years in state prison. Duncan was found guilty of four different charges related to child pornography. According to investigators, Duncan used social media platforms like Instagram to communicate with girls ranging in age of 10 to 14 years old. Investigators say he sent photos to underage children and received photos from children. During the investigation, 600 images and 350 videos of child pornography were found on Duncan’s phone and commuter. Duncan was a security guard at Valley Center High School for 11 years but the investigation shows the acts happened after his time working for the district. 928