Kernel 2.6 rootkits and the quest for Linux security
BREAKING IN AND KEEPING OUT
Your Linux system may not be so airtight after all. To understand the threats, you need to think like an intruder. We'll show you what the intruders are thinking now about the Linux 2.6 kernel.
Of all the most devilish creations in the history of cyber crime, the rootkit is perhaps the most ingenious. A rootkit is a bundle of tools for the network intruder. An attacker who gains access to a computer can upload the rootkit and use the tools to gain control of the system. One interesting aspect of a rootkit is its ability to cover the intruder’s tracks. Doctored-up versions of common monitoring utilities such as netstat and ps hide any sign of the attack. Many, many rootkits were copied onto many computers around the world. But eventually, developers and security specialists grew wise to the ways of user space rootkits. Experts learned to detect the intruder’s presence by looking behind the standard Unix tools for evidence of changes. But rather than giving up, the intruders went on to something new. The kernel rootkit is a new generation of intrusion tool that weaves itself into the Linux system at a very deep level – below the reach of any userland detection tools. Armed with the kernel rootkit, the intruders again gained the upper hand – at least temporarily.
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
News
-
Intel Unveils Compute Stick
Four-inch-long computer on a stick lets you boot a full Linux system from any HDMI display device.
-
Obama Proposes Personal Data Notification Law
New statute would require companies to report break-ins to consumers.
-
TGXf Project Warns of File Transfer through Screen Pixels
Weird data transfer technique avoids all standard security measures.
-
Industry Giants Announce a Fix for the Password Mess
FIDO alliance declares the beginning of the end for old-style login authentication.
-
Poll: Vote for the Best Open Source Software for Photographers
The Linux New Media Awards have honored the most significant products, projects, people, and organizations for open source/Linux every year since 2000.
-
Debian Gets Forked
Legendary Uber-distro splits over the systemd controversy.
-
Linux Mint Project Releases Mint 17.1
New LTS version offers many refinements for the Cinnamon and Mate desktops and significant improvement under the hood.
-
CeBIT Open Source Forum Call for Papers
One of CeBIT’s most successful forums returns in 2015.
-
TOR Network Isn’t So Anonymous
A new study says it is possible to unmask 81% of TOR users.
-
.NET Goes Open Source
Redmond joins the revolution by turning the .NET Core Runtime into a GitHub project.