漏洞 Vulnerability F5 BIG-IP4月补丁日修复多个高危漏洞 https://support.f5.com/csp/article/K96639388?utm_source=f5support&utm_medium=RSS GItLab发布多个中低危漏洞通告 https://about.gitlab.com/releases/2021/04/28/security-release-gitlab-13-11-2-released/ 安全事件 Security Incident Drupal发布SAML认证绕过漏洞预警 https://www.drupal.org/sa-contrib-2021-006 英国铁路网络Merseyrail受到Lockbit勒索软件攻击 https://www.bleepingcomputer.com/news/security/uk-rail-network-merseyrail-likely-hit-by-lockbit-ransomware/ FluBot间谍软件遍布欧洲 https://www.databreachtoday.com/flubot-spyware-spreads-across-europe-a-16480 RotaJakiro: Linux上的一个0VT且隐藏至少三年的秘密后门 https://blog.netlab.360.com/stealth_rotajakiro_backdoor_en/ 黑客利用零日漏洞攻击MacOS计算机 https://thehackernews.com/2021/04/hackers-exploit-0-day-gatekeeper-flaw.html Ghostwriter Update: Cyber Espionage Group UNC1151 Likely Conducts Ghostwriter Influence Activity https://www.fireeye.com/blog/threat-research/2021/04/espionage-group-unc1151-likely-conducts-ghostwriter-influence-activity.html New Nebulae Backdoor Linked with the NAIKON Group https://labs.bitdefender.com/2021/04/new-nebulae-backdoor-linked-with-the-naikon-group/