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Peter Profile picture
Peter
@daokedao1234
Cybersecurity Automation Engineer, Maveris. Great Firewall of China Researcher自由主义. Former migrant worker. He/him. Opinions my own.
Jun 21, 2022 • 8 tweets • 3 min read
A year ago today I quit alc*h*l. Since then I have blocked and selected “not interested” in every ad for it. Today, I still receive ads pushing it on me. I believe this is because twitter and other social media consciously choose to push alc*h*l on problem drinkers. Thread🧵 Image According to the NIH, alc*h*l causes nearly 100,000 deaths a year, making it one of the leading causes of preventable death. This more than the number of opioid related deaths each year, can you imagine if recovering addicts got pain killer ads everywhere? niaaa.nih.gov/publications/b… Image
Nov 17, 2019 • 12 tweets • 3 min read
Some thoughts on how news that the Chinese government is allowing some browsers to access Western social media is emblematic of the evolution of internet censorship in China and its increasing intrusiveness, not a backtrack. In the very beginning internet censorship was "easy" in the sense that all communications were entirely visible to anyone along the transmission routes. If you owned the network, you controlled what went through it.
Jun 5, 2019 • 14 tweets • 5 min read
So I talked about the primary way the Great Firewall (hereafter GFW) works, but if you live in China the error message I showed is probably not the only one you're familiar with. I'm going to try to explain another major one, DNS spoofing 1/ First, some history. From the beginning of the internet people realized how hard it would be to memorize IP addresses and created human readable words called hostnames that people could remember instead, but they still needed a way to translate a hostname in an IP address. 2/
Jun 2, 2019 • 16 tweets • 4 min read
Have you ever wondered what's actually happening on the internet when your VPN stops working? Have you ever wondered why the Great Firewall can block VPNs seemingly whenever it chooses to do so, but not always? No? I thought so, here's a thread on why anyways. 1/16 At the most basic level the internet is a game of hot potato. You stick a message (called a packet) a with a destination on it and a series of routers will estimate which direction they think its in and throw it off that way as quickly as they can until it gets there. 2/16
May 14, 2019 • 11 tweets • 3 min read
This is Dr. Wu Lien-teh. He likely saved 100’s of thousands of lives, and you’ve probably never heard of him. He was born March 10, 1879 in Penang Malaysia to two recent immigrants from Southern China. At 17 he was admitted to Cambridge University where he earned numerous awards, scholarships, and prizes before attaining his medical degree.