NEWS: Be careful what you post on Twitter

, Twitter Inc.

has updated its rules in an effort to combat uploading nonconsensual photographs of nudity or sexual acts. The official changes read as follows. "Private information: You may not publish or post other people's private and confidential information, such as credit card numbers, street address or Social Security/National Identity numbers, without their express authorization and permission. You may not post intimate photos or videos that were taken or distributed without the subject's consent." Twitter also updated its policies on threats and abuse saying that all threats against others on the basis of race, ethnicity, national origin, religion, sexual orientation, gender, gender identity, age, or disability is prohibited.

, Twitter CEO Dick Costolo is taking personal responsibility for his platform's chronic problems with harassment and abuse, telling employees that he is embarrassed for the company's failures and would soon be taking stronger action to eliminate content abusers on his website. He said problems with trolls are driving away the company's users. "We suck at dealing with abuse and trolls on the platform and we've sucked at it for years," Costolo wrote in an internal memo. "It's no secret and the rest of the world talks about it every day. We lose core user after core user by not addressing simple trolling issues that they face every day." The social media company will rely on agents who are part of their Trust & Safety Team to monitor the website and may initiate take-downs of content that violates their policies. Posting content that breaks the above rules will result in having the poster's account locked and possible suspension from the website. Twitter Inc. closed Wednesday at $46.27.