
Cybersecurity, Tech, Security, Privacy, Resilience thought leadership | @BoozAllen | Alum @PwCUS @InsideCyber | Views=own RT≠Endorsements Haiku=possible
Washington, DC
Joined May 2014
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⚙️Critical infrastructure businesses need to 🆙 #cyber defenses. Related👉 #OT/#ICS guide to uncovering and managing systemic risk: bit.ly/3uSeQR7
There it is. Iranian govt cyber actors have hit US critical infrastructure. The veil has been pulled back. US companies need to step up defenses and USG needs to hold Iranian actors accountable. #ImposeCosts
Christopher Castelli retweeted
New with @johnnysaks130: President Trump is set to nominate Sean Cairncross — a former RNC official and the former CEO of the Millennium Challenge Corporation — as national cyber director: subscriber.politicopro.com/a…
Christopher Castelli retweeted
DHS has terminated the memberships of everyone on its advisory committees.
Includes several cyber committees, like CISA's advisory panel & the Cyber Safety Review Board, which was investigating Salt Typhoon.
That review is "dead," person familiar says.
documentcloud.org/documents/…
Christopher Castelli retweeted
President Trump repeals Biden’s AI executive order tcrn.ch/40rFwV2
Christopher Castelli retweeted
BREAKING: The Senate confirms Marco Rubio as secretary of state, the first of President Trump's nominees to be approved. cbsn.ws/4hpWJW2
Christopher Castelli retweeted
Pete Hegseth's nomination to become U.S. defense secretary advances after winning a SASC vote along party lines, source says. Full Senate vote expected late this week
Christopher Castelli retweeted
Ratcliffe cleared the Senate Intel Committee 14-3, per senators leaving the vote
WH statement on acting leaders: whitehouse.gov/presidential-…
Christopher Castelli retweeted
🚨Last Night:"We will also reverse the over-classification of government documents, and in the coming days, we are going to make public remaining records relating to the assassinations of President John F. Kennedy, his brother Robert Kennedy, as well as Dr. Martin Luther King, Jr. and other topics of great public interest. It's all going to be released, Uncle Sam." -- President Donald Trump
Christopher Castelli retweeted
The acting defense secretary will be Robert Salesses, the current deputy director of the Defense Department’s Washington Headquarters Services and acting director of the Facilities Services Directorate. nbcnews.com/politics/donald-…
Christopher Castelli retweeted
8/ Most of the Davos men and women, especially European sophisticates, are like most of my faculty colleagues at Harvard: stuck somewhere between disbelief and denial in the 7 stages of grief. But I’ll be advising them to get real. Trump is now the President of the US and the most powerful individual in the world. Study him. Read, watch, listen—but seriously, not literally. And while I acknowledge that I’m stretching for silver linings, I think it is not only possible, but likely that President Trump will surprise us in building a more constructive, productive relationship with Chairman Xi’s China.
Christopher Castelli retweeted
Trump is zeroing in Sean Plankey to run CISA and Nick Andersen as deputy director, two people familiar with the matter tell me.
(confirming politico's scoop on plankey earlier 🥰)
axios.com/2025/01/15/trump-c…
Christopher Castelli retweeted
From @johnnysaks130 and myself, President-elect Trump is looking at nominating former Energy Department and NSC official Sean Plankey to lead CISA.
Trump zeroes in on Sean Plankey to lead U.S. cyber agency ow.ly/YukG105WTXT
Christopher Castelli retweeted
Trump-Kim, Part II, Could Shake Up the World
A peace treaty with North Korea is possible to achieve in a 2nd Trump
presidency and would be a historic and highly strategic result against the emerging China-Russia-Iran-DPRK anti-American coalition
My latest with @DrRadchenko 👇
Christopher Castelli retweeted
Donald Trump says, ‘I’m going to give you a report on drones about one day into the administration’ trib.al/XxrROXD
Christopher Castelli retweeted
Taiwan's defense is as much about food, energy, and information as soldiers, jets, and missiles.
My dispatch from a recent reporting trip for @voxdotcom :
vox.com/world-politics/39089…
Christopher Castelli retweeted
Taiwan and China traded barbs over what the government in Taipei suspects was a Chinese-linked ship's damage to an undersea communications cable off the island's coast, an incident that has raised alarm bells on the island. reuters.com/world/asia-pacif…
Christopher Castelli retweeted
The Return of Havana Syndrome. theatlantic.com/internationa… A new intelligence report raises questions about a possible mystery weapon. My latest.
Christopher Castelli retweeted
China Hacked Treasury Dept. in ‘Major’ Breach, U.S. Says via @AnaSwanson
nytimes.com/2024/12/30/us/po… via @NYTimes
Christopher Castelli retweeted
So, in sum, Russia has changed its written policy regarding the conditions in which it would use nuclear weapons, but I don't think these changes represent a break in continuity from past Russian nuclear weapons policy. Same wine, new bottle. /end.
Christopher Castelli retweeted
Breaking news from me in @POGOwatchdog:
Key Intelligence Watchdogs Resign in Wake of Trump’s Win
pogo.org/investigations/ic-a…





















