alyssa goard, "today in the bay." >>> part of twitter's source code were leaked online, possibly for creating a major risk for the social media platform. "the new york times" reporting that twitter disclosed the breach in a legal filing late friday when it sent a request to the coding platform grit hub to get it removed. sources say the source code could expose vulnerabilities, giving hackers the ability to steal user data and take down the entire site. twitter believes the post was made by a former employee who left the company last year. >>> 4:38 right now. the storms brought trees crashing down. still ahead, the changes one peninsula woman is trying to make so her neighbors don't have the same problem. >> plus, the pressure of saying "i do" is affecting more than the bride and groom. the costs are becoming too much for guests and the changes some are going to have to make >>> right now at 4:41, we are under a microclimate weather alert, but take a look at these temperatures today. feeling nice and mild as we are still going to have sunshine for much of today, and also preparing fo

here's alyssa goard. >> reporter: videos like this one circulating online over the last few days showing young people get nothing fights, attacking one another at san francisco's stone town mall. >> i feel like they go to tease the mall cops. a lot of older kids ganging up on younger ones. >> reporter: she works at the mall and has seen more fights involving kids. she saw three on wednesday. >> i know there was a security guard thrown around a little bit. and another one inside of target and right beside of target. >> these videos have been shared widely among the kids in the city. and some parents found out about it. >> reporter: she's heard from lots of concerned parents. she is aware of two fights at the mall last week. one thursday and another friday. both involving youth. >> this has been shared on instagram live, folks, you know, watch the video and like it and they get more followers, and i wonder if some of that is not what's propelling kids to go to the mall and be part of the action. >> reporter: she notes the mall is close to schools and they've been happening on wednesdays wh