漏洞 Vulnerability Ubuntu修复多个Linux kernel漏洞 https://ubuntu.com/security/notices/USN-4901-1 安全事件 Security Incident The leap of a Cycldek-related threat actor https://securelist.com/the-leap-of-a-cycldek-related-threat-actor/101243/ APT组织积极利用Fortinet漏洞 https://www.ic3.gov/Media/News/2021/210402.pdf 黑客通过Linkedin进行钓鱼攻击 https://www.esentire.com/security-advisories/hackers-spearphish-professionals-on-linkedin-with-fake-job-offers-infecting-them-with-malware-warns-esentire 《使命召唤：战区》恶意软件 https://threatpost.com/call-of-duty-cheats-gamers-malware/165209/ Facebook5.33亿用户数据被泄露 https://www.zdnet.com/article/facebook-data-on-533-million-users-posted-online/ Asteelflash电子制造商遭遇勒索软件攻击 https://www.bleepingcomputer.com/news/security/asteelflash-electronics-maker-hit-by-revil-ransomware-attack/ 黑客滥用GitHub Actions进行挖矿 https://www.bleepingcomputer.com/news/security/automated-attack-abuses-github-actions-to-mine-cryptocurrency/ （完）
