here's reporter jordan robinson. >> we are writing this week about a researcher, a cybersecurity researcherland. he is the have a top job at intel security, hacking their microprocessors. what he has found his this, his research shows the meltdown from january which affected all of the world's processors. he is able to go a level deeper. what that means is that those vulnerabilities were really bad, and it gets worse. carol: will that's it. really going into the core of how a computer works, this is deep stuff. >> when we think of computers, we think of stuff we interact with. that's not what he is concerned about. he is concerned about the firmware. most people don't know what that is, but it's the code that exists inside the chips on your computer. and what he has discovered is a way to use these hardware exploits to get inside the firmware of your computer, and that's where all the secrets are stored. jason: and you mentioned that he works at intel, and i want everybody to understand, the company that has all of these chips inside so many computers. those are in personal computers, chips

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jordan. joining the conversation, chair of the department of african-american studies at princeton university eddie glaude, jr., and pulitzer prize winning columnist and associate editor of the "washington post," eugene robinson all on board this hour. >>> there is reported tension, joe, inside the white house over rudy giuliani's numerous media appearances over the past week. there were so many, i thought there would be more yesterday but i ended the show yesterday by saying will they let him go back on the air? did anyone see him on tv? >> there were a couple of atm cameras in town. >> i think they fwienlly got the memo he's a runaway beer truck. >> he was calling reporters. >> they can't stop him from making phone calls but they could maybe -- i don't know. it's like the president with his tweets. giuliani denies those appearances have caused any alarm in the white house, but two sources familiar with the president's thinking tell nbc's kristen welker that the president is beginning to lose patience with some of giuliani's recent interviews in which he has at times contradicted the president and the administration. one source says "the president still has confidence in rudy, but rudy will need more discipl