Torn between "I think losing $100 million when someone beats you at security research is pretty much exactly what you signed up for doing yield farming" and "Maaaaaaaybe not the future of finance you were expecting, huh."

decrypt.co/49657/oracle-e…
How to put this in regular finance terms...

Suppose hypothetically you have an account at a brokerage with some valuable asset in it. You take a margin loan against that asset to fund your normal spending, or pay a tax bill, or maybe buy something at another brokerage.
For reasons known only to the brokerage, they don't denominate your loan in dollars. They denominate it in shares of a money market fund, which are worth $1 +/- epsilon and basically never deviate from that.

And you think "Hmm, I have a large equity cushion against this loan."
One day, a computer system at the brokerage reports, sorta-kinda erroneously, that the value of the money market fund is actually $1.30 per share. The equity cushion is gone. Your valuable asset is sold, at timing you didn't choose, at wrong price, to pay an inflated phantom debt
And your recourse is... probably tweeting at patio11 saying he finds too much joy in this.

Which I don't; I just feel like this is why you don't trust a CPU built out of redstone to build reliable financial infrastructure on top of.
"Hey patio11 could this happen in traditional finance?"

Ill-timed liquidations can and do, but attacking someone doing something not-risky to force a liquidation is harder, because of many built in safeguards.
One, you can actually borrow in your unit of account (e.g. dollars), and $1 = $1, so you can't convince a brokerage that a $100k debt is actually $130k.

Two, if you regulated financial institution has a goof in your data feeds causes you to mechanically disadvantage retail...
... your most likely outcome is having an internal meeting and saying "Which do we dislike more, covering their losses out of our equity OR getting our knuckles rapped by the regulators, paying a fine, then covering the losses with our own equity?" and choose door #1.
Three, it is enormously hard to pervert the most popular real markets in the world and that is a game you actually don't want to win, because the first prize is frequently go-directly-to-jail.

This is not the consensus viewpoint among engineers, who do not have good calibration.
Like if you somehow did security research against e.g. the monthly Treasury auction and somehow caused it to invert expectations around reality, that would plausibly have $X0 billion in consequences and you could make out like a bandit.
And also literally everyone you had talked to for the last several years would be taken out for tea by friendly serious federal agents.
("Do you really think that would happen?"

For the treasury auction? Oh heck yes I do. Expect a turf war between the money people and the terrorism people over who gets to lead the investigation.)
Crypto enthusiasts would probably suggest me to disagree with them on this, and I actually do not at all:

The financial system is in part of broader systems of state control. Seriously attacking it at scale would be treated indistinguishably from "kinetic" war.
"So is the state going to seriously come after crypto people then?"

While they flatter themselves into thinking they materially challenge the government, following their own logic pretty closely, if this were actually true their conferences would attract precision munitions.

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More from @patio11

28 Nov
After a year which has often been trying for institutions, glad to see that we’re still hypercapable in places like logistics, air travel regulation, etc.

wsj.com/amp/articles/u…
When I heard reports that the vaccine required low temperatures in transit I thought “Hmm people seem worked up about this but that sounds like the sort of things Ops just lives for. Only question is whether it is solved already or will take O(days) of prework.”
(I heard this from less informed commenter here too, “Do you think we can distribute it across the country in under a month?”, and contingent on supplies being sufficient I think Japanese logistics firms could probably deliver to 99% of clinics in country synchronized to an hour)
Read 8 tweets
28 Nov
I love this and, phrased obliquely to not step on Amazon’s moment, it is standard practice at many emulation-worthy tech companies, with varying levels of CEO involvement.

Pro-tip: almost all BigCo will l do this for paper letters addressed to the CEO or office of the president.
“Are you sure?”

I used to ghostwrite letters to banks as a hobby, and the prototypical subject of them was a grandmother in Kansas in financial distress. The reply was usually from someone like “Senior Vice President, Consumer Lending.”
Unfortunately, and this is a useful thing to know about the sociology of large corporations, sending a letter to the CEO addressed to the PO Box on your statement is not nearly as effective, since it will go to the standard peon with limited capability to do anything but usual.
Read 5 tweets
28 Nov
Simultaneously a bit impressed that a Japanese firm had a process for handling a CS request in English including multiple UX accordances for foreigners (“this can be completed from abroad”) and a bit irked they did not notice the request was written in Japanese and began...
“I am a permanent resident of Japan who has lived here for 15 years, owns property in Tokyo, and speaks professional Japanese.” specifically to avoid being brushed off as being hard to deal with.
(The property thing is directly relevant to the request but also has the knock on effect of suggesting something important about social class and capability of navigating complex interactions.)
Read 4 tweets
27 Nov
Twice this holiday season already I’ve had transactions refunded by fraud teams who think it extremely unlikely that one Patrick McKenzie of Tokyo would do a transaction he has done many, many times before.

False positives are also a cost; one transaction will just not happen.
General flavor: buying low-dollar consumer electronics as a gift, buying high dollar travel gift cards from issuer to pre-pay anticipated travel expense post-covid (and take advantage of a credit card offer).
In both cases they went all the way through and then I got a transaction reversed email days later, which suggests manual review by a fraud team at either the issuer or the counterparty, and it wasn’t the issuer.
Read 5 tweets
27 Nov
An interesting email from Chase for what it implies about how sophisticated they’re getting in tying servicing and marketing. Image
So banks don’t want losing a branch to lose them the local deposit base, so strategically this makes sense. And the mail has the address and a map for the nearest branch to the closing branch right below the fold, which impressed me.

Someone wrote some non-trivial code for this.
That said, I think I went to that branch once, more than 5+ years ago, so I think they could probably have saved their “dust off patio11’s inbox” karma for something more strategically important to them.
Read 5 tweets
26 Nov
I'm a linguistic descriptivist not a prescriptivist, but I lament how "front running" has been in the popular lexicon reinterpreted to mean "anticipating someone's future action and acting before it is finalized" and not "misappropriating information you had a duty of care over."
Because the popular ethics conception that makes "front running" an *accusation* rather than a mere description hinges on that misappropriation to decide that the front running is actually bad.
Like, nobody says I'm front running Ruriko's Thanksgiving plans by going out to the store to buy the ingredients she will be cooking.
Read 9 tweets

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