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I'm Glenn Fiedler and welcome to Más Bandwidth, my new blog at the intersection of game network programming and scalable backend engineering. What's this new blog about? Games with thousands of players. Virtual worlds. Performance in virtual spaces to an audience of millions. The Metaverse (no, not THAT metaverse, t...

The Linux kernel is the heart of many modern production systems. It decides when any code is allowed to run and which programs/users can access which resources. It manages memory, mediates access to hardware, and does a bulk of work under the hood on behalf of programs running on top. Since the kernel is always invo...

Microsoft patched a high-severity Windows Kernel privilege escalation vulnerability in February, six months after being informed that the flaw was being exploited as a zero-day. Tracked as CVE-2024-21338, the security flaw was found by Avast Senior Malware Researcher Jan Vojtěšek in the appid.sys Windows AppLocker d...