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文章描述了错误代码521的含义及其在网络连接中的常见原因。该错误通常由Cloudflare引发，表示无法与源服务器建立连接或获取响应。可能的原因包括服务器配置问题、网络限制或防火墙设置不当等。

联想掌机 Legion Go S 支持两种操作系统：Valve 的 SteamOS（基于发行版 Arch Linux） 和微软的 Windows 11。Ars 测试了相同游戏在两种操作系统上的性能，意外发现 Linux 上的游戏表现超过了 Windows。在测试的五款游戏中，四款在 SteamOS 上的帧率高于 Windows 11，只有《无主之地 3》差不多。SteamOS 运行 Windows 游戏需要 Proton 翻译层转译，因此性能被认为肯定会有损失，但 Valve 的优化工作更出色，相比下微软的 Windows 11 可能存在太多不必要的开销，掌机优化欠缺。微软可能也认识到了这一问题，它最近与华硕合作发布掌机，推出了致力于改进掌机体验的 Xbox Experience for Handheld。

联想 Legion Go S 掌机支持 SteamOS 和 Windows 11。测试显示 SteamOS 游戏性能优于 Windows 11。Proton 层优化出色，Windows 11 开销多。微软与华硕合作改进掌机体验。

Interesse in een militaire functie bij Defensie maar geen idee hoe of wat? Voortaan kan iedereen een open sollicitatie doen bij Defensie. Op de website werkenbijdefensie.nl is dat vanaf deze week mogelijk met één druk op de knop.

Let’s Encrypt 开始测试基于纯 IP 地址的数字证书，有效期仅 6 天且无需域名。该证书基于 SAN（主题备选名称），不提供通用名称。目前尚未明确上线时间表。

A vulnerability was found in Microsoft Internet Explorer 10. It has been classified as critical. This affects an unknown part. The manipulation leads to code injection. This vulnerability is uniquely identified as CVE-2013-3146. The attack needs to be done within the local network. Furthermore, there is an exploit available. It is recommended to apply a patch to fix this issue.

介绍使用 Nim 语言实现的 Cobalt Strike Beacon 开源项目 NimBeacon，并提供了一些 Nim 开发的 Tips

大卫芬奇执导 Aaron Sorkin 编剧，反映 Facebook 创办过程的《社交网络》在 2011 年赢得了多项奥斯卡奖。Sorkin 现在透露他正在制作续集《The Social Network Part II》，但它并非直接延续第一部的故事。报道称，Sorkin 本人将执导新片，将讲述社交网络在 2021 年 1 月 6 日美国国会山暴力事件中所扮演的角色。《社交网络》改编自班·梅立克的 2009 年畅销书籍《意外的亿万富翁：Facebook 的创立，性爱、金钱、天才与背叛的故事》。续集则改编自《华尔街日报》的《The Facebook Files》系列报道，该报道调查了 Facebook 所造成的伤害，内部发现如何掩盖，1 月 6 日骚扰的影响以及青少年用户的心理健康。

本文将详细介绍如何通过各种开源框架在本地完成安全大模型的微调，从底层模型层来优化模型，做出适合安全研究人员的大模型

A vulnerability was found in Netty. It has been classified as problematic. This affects the function Bzip2Decoder of the component Decompression Handler. The manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2021-37136. It is possible to initiate the attack remotely. There is no exploit available.

A vulnerability was found in Oracle Access Manager 12.2.1.4.0 and classified as critical. Affected by this issue is some unknown functionality of the component Centralized Thirdparty Jars. The manipulation leads to denial of service. This vulnerability is handled as CVE-2021-37136. The attack may be launched remotely. There is no exploit available.

A vulnerability was found in Oracle WebCenter Portal 12.2.1.3.0/12.2.1.4.0. It has been classified as critical. This affects an unknown part of the component Security Framework. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2021-37137. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

A vulnerability classified as critical was found in Oracle Communications BRM - Elastic Charging Engine. Affected by this vulnerability is an unknown functionality of the component 5G gateway. The manipulation leads to denial of service. This vulnerability is known as CVE-2021-37137. The attack can be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added three security flaws, each impacting AMI MegaRAC, D-Link DIR-859 router, and Fortinet FortiOS, to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The list of vulnerabilities is as follows - CVE-2024-54085 (CVSS score: 10.0) - An authentication bypass by spoofing

美国网络安全机构CISA新增三个安全漏洞至已知被利用漏洞目录，涉及AMI MegaRAC、D-Link DIR-859路由器和FortiOS系统，评分分别为10.0、5.3和4.2。

A vulnerability was found in Elementor Website Builder Plugin up to 3.29.0 on WordPress. It has been rated as problematic. This issue affects some unknown processing. The manipulation leads to cross site scripting. The identification of this vulnerability is CVE-2024-50555. The attack may be initiated remotely. There is no exploit available.

A vulnerability was found in SpecFit-Virtual Try On Woocommerce Plugin up to 7.0.5 on WordPress. It has been declared as problematic. This vulnerability affects unknown code. The manipulation leads to cross site scripting. This vulnerability was named CVE-2025-23973. The attack can be initiated remotely. There is no exploit available.

A vulnerability was found in Ultra Addons for Contact Form 7 Plugin up to 3.5.11/3.5.19 on WordPress. It has been classified as problematic. This affects the function ajax_get_table_data of the component Database Module. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2025-6212. It is possible to initiate the attack remotely. There is no exploit available.