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Category: Telecommunications Engineering

how Cloudflare’s security team builds on Workers

When the security team at Cloudflare takes on new projects, we approach them with the goal of achieving the “builder first mindset” whereby we design, develop, and deploy solutions just as any standard engineering team would. Additionally, we aim to dogfood our products wherever possible. Cloudflare as a security platform offers a lot of functionality that is vitally important to us, including, but not limited to, our WAF, Workers platform, and Cloudflare Access. We get a lot of value out…

We may be in a vast bubble — ScienceDaily

The earth, solar system, entire Milky Way and the few thousand galaxies closest to us move in a vast “bubble” that is 250 million light years in diameter, where the average density of matter is half as large as for the rest of the universe. This is the hypothesis put forward by a theoretical physicist from the University of Geneva (UNIGE) to solve a conundrum that has been splitting the scientific community for a decade: at what speed is the…

Run-Time Provisioning of Security Credentials for IoT Devices

Download this article in PDF format. To prevent counterfeit devices from joining a network or to limit the opportunity for network attacks, it’s important to authenticate devices attempting to join Internet of Things (IoT) networks and subsequently connect only authorized devices. The standard mechanism to securely authenticate clients connecting to a server is transport-layer-security (TLS) client-side authentication. To implement such authentication in an IoT network, the appropriate certificate authority (CA)—usually the IoT device provider—issues a unique X.509 certificate to each…

Remote Work Isn’t Just Video Conferencing: How We Built CloudflareTV

At Cloudflare, we produce all types of video content, ranging from recordings of our Weekly All-Hands to product demos. Being able to stream video on demand has two major advantages when compared to live video: It encourages asynchronous communication within the organization It extends the life time value of the shared knowledge Historically, we haven’t had a central, secure repository of all video content that could be easily accessed from the browser. Various teams choose their own platform to share…

This Week in PowerBites (3/16-3/21)

APEC Power Technology Conference Succumbs to COVID-19 The organizers of the 2020 Applied Power Electronics Conference (APEC), scheduled to be held April 15-19 in New Orleans, cancelled the event in response to the COVID-19 outbreak. In their March 10 announcement, the organizers expressed their disappointment, but told would-be participants that “Planning is already underway to assemble and deploy a virtual conference experience in the near future,” and it would contain as much of the original event’s extensive program as possible.…

Building a more accurate time service at Facebook scale

Almost all of the billions of devices connected to the internet have onboard clocks, which need to be accurate to properly perform their functions. Many clocks contain inaccurate internal oscillators, which can cause seconds of inaccuracy per day and need to be periodically corrected. Incorrect time can lead to issues, such as missing an important reminder or failing a spacecraft launch. Devices all over the world rely on Network Time Protocol (NTP) to stay synchronized to a more accurate clock…

recent changes in Internet traffic

As the COVID-19 emergency continues and an increasing number of cities and countries are establishing quarantines or cordons sanitaire, the Internet has become, for many, the primary method to keep in touch with their friends and families. And it’s a vital motor of the global economy as many companies have employees who are now working from home. Traffic towards video conferencing, streaming services and news, e-commerce websites has surged. We’ve seen growth in traffic from residential broadband networks, and a…

Exposure to microplastics causes cellular changes in fish and may disrupt endocrine systems — ScienceDaily

Chronic exposure to microplastic fibers causes aneurysms, erosion of surface layers and other serious damage to fish gills, and increases egg production in female fish, a sign that chemicals in the fibers may be acting as endocrine disruptors, a new study by U.S. and Chinese scientists finds. The minuscule fibers, which are made of polyester, polypropylene and other types of plastics, are shed or washed off of synthetic textiles used in clothing and other consumer and industrial products. Once shed,…

Time to Dust Off Video Conferencing

Blogs are usually something you do when the urge hits and you don’t want to get your other work done. That’s what this is, because the virtual pile of stuff I have to do is getting so high I’m almost afraid to pull the stuff out from the bottom as the rest may come crashing down. Ok, this is sort of work. I will be talking about the impact of the coronavirus on person-to-person meetings. In-person meetings has effectively gone…

Engineering Ethics Blog: Hiding In Plain Sight: Foiling Face-Recognition Technology

The government of China has invested billions of dollars and years of effort in creating a facial-recognition database of as many of its 1.3 billion people as possible.  Their goal is social control:  to keep tabs on every individual and to make sure anyone doing anything the government doesn’t like will at least worry about being caught. But those of us in the U. S. and Europe shouldn’t simply sigh in relief that our governments don’t do such things.  Facebook…