问HN：你们是否在准备“网络攻击”，或者我们应该准备吗？
捷豹路虎遭受了攻击，推测是一起勒索软件攻击（https://www.bbc.co.uk/news/articles/cy9pdld4y81o），估计损失达到20亿美元。<p>这些IT部门犯了什么错误？你们采取了哪些措施来预防此类事件？
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Jaguar Land Rover was attacked, presumably by a ransomware attack (https://www.bbc.co.uk/news/articles/cy9pdld4y81o) costing an estimated 2Bn dollars.<p>What mistakes are such IT departments making? What actions are you taking to prevent it?