系统遭入侵警告：黑客入侵并留下一段威胁信息

一个系统遭到黑客入侵，入侵者留下一段英文内容：'Unfortunately, your system has been compromised by a skilled hacker. We were able to bypass your security measures and gain access to sensitive information. This serves as a reminder that no system is completely secure, and that constant vigilance is necessary to protect against cyber attacks. We urge you to take immediate action to strengthen your defenses and prevent future breaches. Remember, prevention is always better than cure. Good luck.' 这段信息提醒我们，任何系统都无法做到绝对安全，需要时刻保持警惕，加强防御措施来防止网络攻击。建议立即采取行动，加强系统防御，防止未来遭受类似攻击。