LinuxSecurity.com

For years, Linux security has triggered two very different arguments. One side sees the problem as largely solved. The operating system has a strong permissions model, and open source transparency allows vulnerabilities to be inspected and fixed quickly. The other side sees a growing crisis, pointing to the constant stream of CVEs and the increasing sophistication of modern attacks. In reality, the situation falls somewhere between those views. The more useful question is: who targets Linux systems, and why?

At some point, someone asks, ''Are we running antivirus on Linux?'' It usually comes from a compliance review, a security questionnaire, or a manager who assumes antivirus is universal. The question sounds simple, but the answer isn't.

Cybersecurity strategies often focus on firewalls, endpoint protection, and vulnerability patching. While these controls are critical, hosting infrastructure visibility is frequently underestimated as a risk factor.

Spend enough time around production systems, and you notice something. The workloads that cause friction are not always the ones pushing CPU utilization. They are the ones pushing data constantly.

You can lock down UFW or nftables, tighten SSH, layer in fail2ban, and still not know what is actually moving across your network. At some point, that gap becomes obvious. You see a strange outbound connection in netstat, or a spike in DNS requests, and realize your controls are mostly about blocking, not observing.