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Andy Ellis

@csoandy.bsky.social
333 followers 289 following 61 posts

Author, Leader, Technologist, Security, Time Person of the Year

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Andy Ellis @csoandy.bsky.social · 14/10/2025
Thank goodness the living hostages are all home. Finally we can dance again.
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Andy Ellis @csoandy.bsky.social · 01/01/2025
Prayers for the victims and families of the terror attack in New Orleans. May they find comfort in their mourning, and healing be swift and complete for the injured.
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Andy Ellis @csoandy.bsky.social · 01/01/2025
You can spread your light even when you’re a bit different than those around you.
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Andy Ellis @csoandy.bsky.social · 30/12/2024
May our hostages be redeemed from darkness.
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Andy Ellis @csoandy.bsky.social · 28/12/2024
Why are Jews justifiably enraged at Hamas? x.com/henmazzig/st...
x.com
x.com
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Andy Ellis @csoandy.bsky.social · 22/12/2024
A general rule for critical analysis of any research that purports to model human thinking: generate a random dataset. If the effect is stronger in the random dataset than in the research, the research is bunk.
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Andy Ellis @csoandy.bsky.social · 22/12/2024
The belief in D-K persists because expert humans - think Neil Degrasse Tyson - fail spectacularly when just outside their area of expertise, because they can’t see the infelicities in their models (or hubris). That’s not a general effect on all humanity.
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Andy Ellis @csoandy.bsky.social · 22/12/2024
Nope, worse than that. The refined analysis is that asked to score themselves on a *percentile* basis against an unknown cohort will substantially outperform against random weighting. Which is strong evidence that, even when the system is rigged, humans are really good at general self-assessment.
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Reposted by Andy Ellis
Russ Wilcox @russwilcox.bsky.social · 22/12/2024
It's this year's Kindle candle table bundle
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Andy Ellis @csoandy.bsky.social · 22/12/2024
What is this? Wrong answers only.
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Andy Ellis @csoandy.bsky.social · 22/12/2024
Haven’t listened to the podcast, but you do know that the research that D-K relied on is sloppy, and, if anything, disproves the D-K effect? The study itself is the best argument for the effect … because many social science researches are incompetent at basic data analysis.
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Andy Ellis @csoandy.bsky.social · 12/12/2024
Don’t worry, I hear antisemitism only exists on the right. www.thefp.com/p/explosion-...
thefp.com
The Explosion of Jew-Hate in Trudeau’s Canada
There has been a 670% increase in antisemitic incidents in the past year. ‘It was like a dam burst.’ What happened and why? The Free Press investigates.
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Andy Ellis @csoandy.bsky.social · 10/12/2024
San Francisco Hillel. Khaybar, if you didn’t know, is a reference to a Jewish community conquered by Mohammed, where the Jews were ethnically cleansed by Muhammad and his followers.
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Andy Ellis @csoandy.bsky.social · 09/12/2024
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Andy Ellis @csoandy.bsky.social · 09/12/2024
Melbourne. Laguna Beach. Toronto. Amsterdam.
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Andy Ellis @csoandy.bsky.social · 01/12/2024
Represent.
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Andy Ellis @csoandy.bsky.social · 29/11/2024
If you don’t eat your pie this way, do you really love America?
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Andy Ellis @csoandy.bsky.social · 27/11/2024
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Andy Ellis @csoandy.bsky.social · 25/11/2024
This weekend, in Canada, you were more likely to be arrested or hassled by the cops for being a Jew than for openly calling for the murder of Jews. (If you don’t know what I’m talking about, think about your news sources)
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Andy Ellis @csoandy.bsky.social · 25/11/2024
Welcome to Bluesky, where mocking the murder of Jews is … normal?
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Andy Ellis @csoandy.bsky.social · 24/11/2024
May his memory be for a blessing.
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Andy Ellis @csoandy.bsky.social · 19/11/2024
Za’atar Picanha. (Spice from Shuk Hacarmel, Tel Aviv, Israel)
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Andy Ellis @csoandy.bsky.social · 19/11/2024
Not sure how much longer one will be able to stumble across these memorials in Germany.
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Andy Ellis @csoandy.bsky.social · 17/11/2024
Salute to Service.
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Andy Ellis @csoandy.bsky.social · 17/11/2024
Sunset in Tel Aviv (last week).
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Andy Ellis @csoandy.bsky.social · 16/11/2024
Hassled by airport security in Paris for wearing this.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
I did not say “as the war”, nice try. But there are prices - especially in the lives of future Hamas victims - that one does not pay. But it sounds to me like you’re perfectly comfortable leaving Hamas in a place to keep killing Jews, so we’re done here.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Sounds like you’re projecting. “If you cared” is the rhetorical sound of someone with no empathy.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
It has to be airdropped to get past areas Hamas controls. Many of the trucks are simply taken by Hamas; have you noticed how plump many of the Hamas terrorists are when captured and stripped to small clothes?
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Hamas didn’t offer to free all of them. And some prices are too high to pay. I do actually care; but I’m suspecting you do not, except as a bludgeon to use rhetorically.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
A) that was a month ago, not a week ago. B) Hamas demanded, in exchange for 40 of 140 hostages (which might include some, but not all, women): ending the war, the release of pretty much all Palestinians convicted of terrorism, and Israel’s exit from half of Jerusalem. But you do you.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Building destruction data: x.com/ltcpeterlern...
x.com
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Ah, look, you’ve listed all the places Hamas been operating from! Which means you’re either an ignorant repeater of things you’ve heard, or you’re knowingly evil, spreading Hamas’s propaganda. Either way, I’m done with you, but I hope that Adonai grants you favor and shows you kindness.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Israel is not committing genocide, no matter how much antisemites like to claim they are. And you didn’t point out anything; you linked to an article that relies on the statements of the UN, whose hand has been caught in the cookie jar of employing Hamas terrorists. Thanks for playing.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Anyway, thanks for demonstrating that you’re perfectly comfortable supporting Hamas’s genocidal desires and actions, including raping Jewish women in captivity.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
Yes they are. Israel facilitates a huge amount of aid into Gaza, but a huge chunk of it disappears, only to be resold by Hamas on the black market.
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Andy Ellis @csoandy.bsky.social · 23/03/2024
It’s apparently starting to be fashionable for Jews to call for a “bilateral ceasefire.” I reject this quisling formulation. I call upon Hamas and its Gazan supporters to unilaterally surrender, release all hostages, and permit humanitarian aid to reach the people of Gaza.
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Andy Ellis @csoandy.bsky.social · 12/02/2024
When the person "in charge" needs on-the-fly support, how are you prepared to address their need? duhaone.substack.com/p/engaging-b...
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Andy Ellis @csoandy.bsky.social · 25/12/2023
In the spirit of Festivus, let me air a grievance. It’s Christmas. Wish folks a Merry Christmas! open.substack.com/pub/duhaone/...
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Andy Ellis @csoandy.bsky.social · 23/11/2023
You don't need to win any arguments with family on this holiday: Don't be a Turkey Today. open.substack.com/pub/duhaone/...
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Andy Ellis @csoandy.bsky.social · 21/11/2023
One of the best parts of my current role is getting to sit with CISOs and founders to hear how they interact. After doing so at a recent event, I took some time to capture some notes on how the evolution of the CISO role is affecting startups: www.darkreading.com/operations/h...
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Andy Ellis @csoandy.bsky.social · 17/11/2023
So, there's this letter some @harvard.bsky.social faculty signed criticizing the University's attempt to combat antisemitism. I read the letter and analyzed it for you: www.csoandy.com/files/a-resp...
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Andy Ellis @csoandy.bsky.social · 13/11/2023
Showing Up Has Costs. Have you considered what they are when you ask for it to happen? open.substack.com/pub/duhaone/...
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Andy Ellis @csoandy.bsky.social · 08/11/2023
DEI programs have mostly been a disaster. But assume you want to solve the problem (your org is adversely impacting some folks), how should you start addressing it? open.substack.com/pub/duhaone/...
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Andy Ellis @csoandy.bsky.social · 28/10/2023
The commentary of Columbia and Harvard have an interesting sub-plot. They both refer to the doxxed targets not by their ideology (antisemitism), but by their identity (Palestinian, Arab, Muslim, leaving out the doxxed Jews). They’re seeing this as a race war, not a Shoah.
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Andy Ellis @csoandy.bsky.social · 25/10/2023
How do you bring in elements of a new culture without railroading your new organization? duhaone.substack.com/p/culture-cl...
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Andy Ellis @csoandy.bsky.social · 16/10/2023
This past week, Harvard’s leadership demonstrated a stunning lack of moral clarity. What should you do as an organization when some of your “team” reveal themselves to be awful? duhaone.substack.com/p/when-peopl... Relatedly, I’ve resigned my position on the Visiting Committee to Harvard IT.
duhaone.substack.com
When people tell you they are antisemitic, believe them
Sometimes as a leader, you have to message in opposition to your own people. Do you have the moral clarity to do so?
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Andy Ellis @csoandy.bsky.social · 03/10/2023
The Taylor Swift / Travis Kelce storyline highlights a struggle many organizations face: how do you both assimilate new people into a community, while celebrating and accommodating their different perspectives? duhaone.substack.com/p/assimilati...
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Andy Ellis @csoandy.bsky.social · 11/09/2023
Danny Lewin showed me the value of investing early in shared language. As a leader, moving forward is best done when we're all on the same page. duhaone.substack.com/p/on-the-sam...
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Andy Ellis @csoandy.bsky.social · 06/09/2023
When you learn from a mistake, do you bother to tell the people you used to disagree with? Also, does "return to office" have a vision that'll make it succeed? open.substack.com/pub/duhaone/...
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