In the world of information security, you have to assume that hackers will get into your network. Whether using a zero-day exploit, sending malicious emails to your employees or taking advantage of poor coding in use on your webpage, attackers are coming for you. Your job as an administrator is to make it as difficult as possible for an attacker to gain access as well as being able to detect and mitigate an attack after it occurs. This is why practicing “defense in-depth” must be an essential part of your everyday thought process. When deploying new services, devices, or applications, you should think to yourself: “If this were compromised, how could I mitigate the risk of an attacker advancing further into my network?” In come chroot jails.
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