漏洞 Vulnerability CVE-2021-20027：SonicWall未认证拒绝服务漏洞 https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0016 CVE-2021-31812/CVE-2021-31811：Apache PDFBox多个高危漏洞 https://pdfbox.apache.org/ 安全事件 Security Incident Avaddon勒索病毒释放密钥，疑似已停止运营 https://www.bleepingcomputer.com/news/security/avaddon-ransomware-shuts-down-and-releases-decryption-keys/ 美国核武器承包商被REvil勒索病毒袭击 https://www.bleepingcomputer.com/news/security/revil-ransomware-hits-us-nuclear-weapons-contractor/ 肚脑虫（APT-C-35）组织最新攻击框架披露 https://mp.weixin.qq.com/s/rMgQWQ8uW9foOy60LKtRJw 尼日利亚黑客组织SWEED正在散发针对物流行业的钓鱼文档 http://blog.nsfocus.net/sweed-611/ 麦当劳客户及员工信息遭遇数据泄露 https://www.bleepingcomputer.com/news/security/mcdonalds-discloses-data-breach-after-theft-of-customer-employee-info/ 奥迪、大众330万客户遭遇数据泄露 https://www.bleepingcomputer.com/news/security/audi-volkswagen-data-breach-affects-33-million-customers/