Encryption is the process of encoding information so that only certain people can see it. To encrypt data, you use an encryption key. Similar to how a key is used to lock something, you use the encryption key to encode or lock plain text into encrypted text or ciphertext. There are two main types of […]
The Principle of Least Privilege is the idea of providing the lowest level of access to all user accounts to reduce privileges to resources, systems, and networks. Only user accounts that require access to the specified resource are given access. Additionally, access is only given when it is needed, and then it is revoked. For […]
Attaching the Ubuntu Advantage subscription to Ubuntu, brings the enterprise lifecycle, including Linux kernel livepatching, access to FIPS validated packages, and compliance with security profiles such as CIS. Installing the UA client This step is necessary for Ubuntu Advantage customers or holders of personal subscriptions. If you are an Ubuntu Pro user, your subscription is […]
Secure/Multipurpose Internet Mail Extensions, or S/MIME, is an internet standard to digitally sign and encrypt email messages. It ensures the integrity of email messages remains intact while being received. By using digital signatures, S/MIME provides for authentication, message integrity, and non-repudiation of origin. In addition, S/MIME includes encryption that strengthens privacy and data security for […]
ModSecurity is a free and open source web application that started out as an Apache module and grew to a fully-fledged web application firewall. It works by inspecting requests sent to the web server in real time against a predefined rule set, preventing typical web application attacks like XSS and SQL Injection. Install ModSecurity ModSecurity […]
Keeping your system up-to-date with the latest packages and security updates can be a tedious task. Most users forget to do it, leaving them vulnerable to countless threats. Automate security (and other package) updates with the utility Unattended Upgrades on Debian or Ubuntu. You can set up automated security updates on Linux by installing a […]
