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What is Log4Shell? The Log4Shell vulnerability explained (and what to do about it)

Dynatrace

The vulnerability, published as CVE-2021-44228 , enables a remote attacker to take control of a device on the internet, if the device is running certain versions of Log4j 2. Simply put, attackers can remotely take over any internet-connected device that uses certain versions of the Log4j library anywhere in the software stack.

Internet 260
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The Great Firewall of China: Obstacles to Monitoring Performance

Dotcom-Montior

The entire country of China’s internet connectivity is shielded by the Great Firewall (GFW). There are three state-owned ISP providers, China Unicom, China Telecom, and China Mobile , that control internet in China. These updates will disable access of Google apps downloader, for example. IP Blocking.

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Improving Core Web Vitals, A Smashing Magazine Case Study

Smashing Magazine

LCP, or Largest Contentful Paint , is one of the three Core Web Vitals that you must “pass” to get the full search ranking boost from Google as part of their Page Experience Update. From an SEO perspective, it doesn’t really matter what other tools tell you, GSC is what Google Search sees. The issue was that LCP was too slow on mobile.

Google 143
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Better Video Streaming With imgix

Smashing Magazine

Adaptive bitrate videos have multiple versions of the video available and can adapt to the network speed of your customer. That ensures that the video will start playback quickly and is much less likely to stall during playback — no matter the speed of your user’s internet connection.

Media 107
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Search Engine Optimization Checklist (PDF)

Smashing Magazine

The most beautiful, spectacular site in the world won’t do anyone much good if people can’t find it on Google (or Bing, or DuckDuckGo). Note : You can also just download the checklist (PDF, 158 KB). Work out what your priorities are, how you can measure progress, and the limitations of the available data. Google Keyword Planner.

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Mobile browser testing – what is it and when is it done?

Testsigma

With the rapidly increasing use of smartphones and ease of access to the internet across the globe, testing has spread across vast platforms. Applications that do not require to be downloaded and can be accessed via hitting the URL on a mobile browser are known as mobile web applications. What are Mobile Web Applications?

Mobile 52
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How to Optimize Websites for Ad Publishers

Dotcom-Montior

There are tools available such as Dotcom-Monitor’s free speed test that you can utilize to gauge performance. including DNS, Connection, SSL, Request, First packet, and Download. As your speed test results will probably show, most of the time spent loading your page is for downloading images and initializing JavaScript.

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