hao hong, jessica lessin, safe travels, good to see you. >>> u.s. warning chinese hackers are positioning themselves to attack critical u.s. infrastructure eamon javers joins us from d.c. with exclusive reporting >> that's right. american officials are scrambling to make sure potential weaknesses in the software used to operate american infrastructure have not been penetrated by chinese and russian hostile actors they're focusing on the threat to so-called open source software which is developed by hobieists and others and put into the public domain the fear is that hackers could be developing this code, releasing it to the public and ceding vulnerabilities intentionally. they asked the open source community for ideas on how to secure the code. a government official tells cnbc that cisa plans to release a draft national strategy for open source security in the coming months meanwhile, a new report from a cyber security firm highlights the potential threat researchers at fortress information security discovered 90% of products used to manage america'