Tiger is History, Long Live Modern Alternatives!

The History and Alternatives to the Tiger Security Tool Recently I saw some tweets showing up from an old friend: Tiger. Surprised to see it being promoted, as I know the tool for years, but never seen any new releases in the last years. Both are actually a shame. An outdated tool is usually of lower value. Promoting old tools might actually disappoint others and harm the initial trust in the software. History of Tiger In its day, the tool […]

Read more

Find Differences Between Two Daily Lynis Audits

Comparing Lynis Scan Results Lately I saw a great feature request for Lynis, to detect differences between two runs of Lynis. Wouldn’t it be great to run Lynis daily and then see if anything changes and act upon those differences? While our auditing tool doesn’t have such an option itself, it is very easy to implement something and fine-tune it to your needs. Report Lynis has two important files to which is logs data: /var/log/lynis.log /var/log/lynis-report.dat The first file /var/log/lynis.log has […]

Read more

DevOps vs Security: Can Docker make a difference?

One of the pioneers in the world DevOps, is the company Docker Inc. Known for its toolkit around Linux container technology, they propel the way this technology evolves and is promoted to the world. With great achievements and interest from the outside world, also comes a lot of pressure. Competing products are showing up, resulting in a battle for features, pricing and customers. Unfortunately for security professionals like us, the many security lessons from the past seems to be forgotten. […]

Read more

Find the alternatives: CIS-CAT auditing tool

Alternatives to the CIS-CAT auditing tool The Center for Internet Security, CIS for short, is the organization behind several in-depth hardening guides. The quality of these hardening guides is outstanding, with a high level of detail. This high level of detail has one downside: it costs a lot of time to read, try and test the recommendations. Sometimes we simply don’t have the time to do an extensive audit by hand. Let alone the time to actually repeat the auditing […]

Read more

Security Best Practices for Building Docker Images

Security Best Practices: Building Docker Images Docker simplifies software packaging by creating small software units. It starts with a base OS image, followed by software installation and finally the configuration adjustments. For building your own images, Docker uses small build files, with the less than original name Dockerfile. Docker build files simplify the build process and help creating consistent containers, over and over. Unfortunately developers don’t always take security into account during the build process, resulting in software which is installed insecurely. […]

Read more

Security Integration: Configuration Management and Auditing

Configuration Management and Auditing Increased strength when combining tools for automation and security of IT environments Tools like Ansible, Chef, and Puppet are used a lot for rapid deployment and keeping systems properly configured. These tools in itself are great for ensuring consistency over your systems. So what is Configuration Management? Configuration management is the art of keeping systems properly configured. Usually companies start small, which equals manual configuration. Each time a new system is deployed, it is configured manually. […]

Read more

Using unattended-upgrades on Debian and Ubuntu

Using unattended-upgrades on Debian and Ubuntu To counter the biggest threat to software packages, they should be updated on a regular basis. Vulnerabilities are discovered on a daily basis, which also requires we monitor daily. Software patching takes time, especially when testing and reboots are needed. Fortunately, systems running Debian and Ubuntu can use unattended-upgrades to achieve automated patch management for security updates. Installation With most software packages, unattended-upgrades has to be installed. root@system:~# apt-get install unattended-upgrades If you are […]

Read more

Why Linux Security Hardening Scripts Might Backfire

Why Linux Security Hardening Scripts Might Backfire System administrators and engineers love to automate things. In the quest to get everything replaced by a script, automated hardening of systems is often requested. Unfortunately this automation might later backfire, resulting in a damaged trust in system hardening. Why System Hardening? The act of increasing system defenses is a good practice. It helps protecting your valuable data, so it can only be used by authorized people. System hardening itself consists of minimizing […]

Read more
12