I'm Dear Drabosa, and you're listening to CNBC's Tech Check. Our show is live weekdays at 11 a.m. Eastern. Listen in.

Good Tuesday morning. Welcome to Tech Check. I'm Carl Kinteneer with Deerboza and John Ford, who are live at Goldman's Communicopia Conference this morning. a lot more on that in just a moment.

This hour, more live testimony from Twitter whistleblower Peter Mudge Zatko, answering questions

from Senate Judiciary.

And coming up from Communicopia, John?

Yeah, two big interviews.

First, we've got the CEO of Palo Alto Networks. That's one you definitely

don't want to miss. Nick Hesh, Aurora. And then we've also got former Google head of commerce

and now Pinterest CEO Bill Reddy. He's going to be with us. Coverage is going to continue

here all afternoon. But guys, we got to start with the market reaction this morning. All

eyes are on it. The reaction to that CPI number having a big impact on stocks. Nasdaq is flirting

with a 4% drop this morning. For more and how we're trading, let's bring in CNBC senior

markets commentator Mike Santoli. We are there. The NASDAQ 100 is down 4% Mike. What's going on?

Yeah, I mean, obviously this was kind of the sweeping away of this rally we had only a few

days ago. So clearly it was a little bit of over anticipation of a benign CPI number.

We got exactly the reverse. And in fact, in a lot of the ways that folks expected it to be a little bit more friendly,

some of the core elements maybe, you know, cooling off to some degree that did not happen. So you really

essentially, you know, invalidated a lot of the premise for this rally. Now, it is hitting

the big NASDAQ stocks harder. That's partly because they are the big index

names and they did have a better run off the lows. Partly, it's just because higher inflation

means higher nominal growth. It means kind of less of a premium on these more steady growers.

And obviously, you have that discount rate effect where people are worried about more expensive

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