A friend asked why they haven't seen much international news about the COVID outbreak in Vietnam. Honestly I don't know exactly why, but here's what I know.

Please spread the word. The world needs to know this.
My family has lost 3 members. My aunt died 3 days ago, her husband and another aunt's husband 2-3 weeks ago.

My dad and my uncle are hospitalized. My uncle is in bad shape, thanks God my dad has started recovering.

So far I've lost 8 people whom I'd known my whole life.
But this is not about me or my family.

I have friends and I can afford things. If I still can't protect my family, how the hell can less fortunate people deal with this horrendous crisis?

The answer is they can't and are dying en mass.
Don't take my word for it. Here's the msg I got yesterday from a doctor volunteering to fight at one of the COVID epicenters. The last msg literally means "died a lot".

I redacted their identity because I don't know if the government would go after them.
Here's another msg I got from our contact in Binh Duong. A 20 years old ethnic man died yesterday because of hunger.

It sounds unbelievable, but if somebody told me in August 2021 I'd have to call everyone I know to find oxygen and food for my dad I wouldn't believe either.
Now, why haven't you heard about this? As I said, I don't know exactly why, but I have a few theories.

It could be censorship. Local journalists told me that when the outbreak was about to get out of control, the Ministry of Truth has forbidden reporters to report bad news.
Doctors are also disallowed to plead for help on social media. They are too exhausted anyway to do anything after their endless shifts.
It could be that the gov wants to save face, refuses to ask for international aid (except vaccines), as they don't want to admit that they're responsible for the worst humanitarian crisis since the fall of Saigon.
It could be that the people affected the most (like the person in Binh Duong that died because of starvation) are at the bottom of the society, and don't have any means to even cry for help. Without a smart phone, they had ceased to exist even before COVID killed them.
Or it could be that my family is really unlucky and everybody else is doing just fine.

I know that can't be true because every single person I've talked to is struggling to survive.
#Saigon was trending a few days ago when Saigon 1975 was being compared to Kabul 2021. Most didn't know that Saigon 2021 is also falling.

But now you do. Please help spread the word and make a donation: vietbay.group/events/fundrai….

/End

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More from @XorNinja

13 Sep
Just in case you never saw RSA and didn't understand @0xfatty's fun discovery, here's some background.

A thread.

RSA is a famous cryptosystem invented in the 1970s, and still widely deployed. Its inventors won the Turing Award, computer science's equivalent of the Nobel Prize.
When used properly*, RSA allows humans and machines to digitally sign document to prove authenticity. Given a document and its RSA signature, anyone can verify that the document has not been modified. This is one of the most wonderful inventions of the 20th century.
I put a star to the word property because there are people like yours truly spending their entire adult life on finding, exploiting and preventing improper use of RSA (and other cryptosystems).

Using RSA with a small key is a classical misuse.
Read 9 tweets
8 Aug 20
I reversed the Vietnam's contact tracing app, and found that it can silently upload all contact history to a centralized server, despite claiming that it only stores data on the client.

Somebody then said I was wrong and challenged me to provide evidences.
Well, challenge accepted and achieved! github.com/thaidn/bluezone

I now know much more than I ever wanted to about React Native and how to merge split APKs =)
I'm now told that I don't understand how contact tracing works.

When I said in decentralized contact tracing systems, the server will publish a list of infected IDs, from which clients will download and do matching locally, dude said it never works that way.
Read 5 tweets
2 Oct 19
How this works (from memory)

Problem:
-Client has a single pair of (username, password) that it wants to check if it was leaked.
-Server has a huge database of leaked (username, password).
Security/privacy requirements:
- Server cannot learn the client's password
- Server cannot distinguish between the client's username and k-1 others, i.e., k-anonymity
To check a single password:
1. Client computes a k-bit hash of username, denote U
2. Client computes P = r * H(password), where r is a random scalar, and H(password) hashes the password to a point on NIST P-256
3. Client sends (U, P)
Read 8 tweets
30 Jul 19
Kepler: so, you see, orbit of a planet is elliptical. To find where the Earth is, we need a method to calculate the arc length of the ellipse
Fermat: I have discovered such a marvelous method which this tweet is too narrow to contain
Newton: This is a fluent problem, and, as usual, it can be solved with an infinite series expansion
Leibniz: Pardon monsieur, what's a fluent? Arc length is an integral problem, and to calculate ∫f(x)dx first you need to find a closed form function such that F'(x) = f(x)
(100 years had passed. The search for Leibniz's closed-form solution for the elliptic integral, that is ∫f(x, g(x))dx where f is a rational function and g is a polynomial of degree 3 or 4, had been fruitless)
Read 13 tweets

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