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Lech Sandecki

Lech Sandecki

14 posts

Lech Sandecki
16 June 2026

Beyond Mythos: responding to a new threat landscape

Ubuntu Ubuntu tech blog

Canonical’s security philosophy has always been built on the premise that vulnerabilities exist and will be discovered. Our response relies on defense-in-depth architecture, rapid patch deployment, and strict adherence to Coordinated Vulnerability Disclosure (CVD). AI changes vulnerability discovery volume and speed. We have a robust vuln ...

Lech Sandecki
27 March 2026

The “scanner report has to be green” trap 

Security Ubuntu tech blog

Stability, backports, and hidden risks of the bleeding edge In the modern DevSecOps world, CISOs are constantly looking for signals in the noise, and the outputs of security scanners often carry a lot of weight. A security scan that returns a “zero CVE” report often unlocks promotion to production; a single red flag can block ...

Lech Sandecki
23 October 2024

6 facts for CentOS users who are holding on

Cloud and server Ubuntu tech blog

Considering migrating to Ubuntu from other Linux platforms, such as CentOS? Find six useful facts to get started! ...

Lech Sandecki
26 October 2023

Running OpenSSL 1.1.1 after EOL? Stay secure with Ubuntu Pro.

Ubuntu Ubuntu tech blog

A few months ago, the OpenSSL Project announced the end of life of OpenSSL 1.1.1. It is used by thousands of software components included in Ubuntu 18.04 LTS and Ubuntu 20.04 LTS, with many organisations relying on version 1.1.1. Rest assured that the Ubuntu security team will continue to maintain important security fixes in OpenSSL ...

Lech Sandecki
3 October 2023

Zenbleed vulnerability fix for Ubuntu

Cloud and server Ubuntu tech blog

On 24 July 2023, security researchers from Google’s Information Security Engineering team disclosed a hardware vulnerability affecting AMD’s Zen 2 family of microprocessors. They dubbed this vulnerability “Zenbleed” (CVE-2023-20593), evoking memories of previous vulnerabilities like HeartBleed and hinting at its possible impact. In respon ...

Lech Sandecki
14 March 2023

Time to prepare for Ubuntu 18.04 LTS End of Standard Support on 31 May 2023

Security Ubuntu tech blog

Ubuntu 18.04 LTS ‘Bionic Beaver‘, one of the most popular Ubuntu releases, will reach the end of the standard, five-year maintenance window for Long-Term Support (LTS) releases on 31 May 2023. Find out more What is an Ubuntu LTS release? Ubuntu LTS releases provide a stable, enterprise platform for development and production, with five ye ...

Lech Sandecki
19 February 2023

Cloud computing security and compliance with Ubuntu Pro

Security Ubuntu tech blog

Cloud computing security coverage for the operating system and the entire collection of software packages for 10 years with Ubuntu. ...

Lech Sandecki
28 October 2021

Enhance the security of your open-source applications and share feedback

Ubuntu Ubuntu tech blog

Are you spending time on high-impact, high-value activities, or are you constantly derailed by maintenance, support, and deployment challenges? Does your organisation consume open-source software that needs security patching? Where do you get the security updates from, and how do you track what’s available? Are you responsible for vulnera ...

Lech Sandecki
9 March 2021

Open source enterprise support vs free open source use

Cloud and server Ubuntu tech blog

Ubuntu and CentOS are both popular examples of open source Linux operating systems adopted because of the breadth of community support, but also because of the availability of enterprise-grade support. However, since the announcement last December, the CentOS project as we knew it, will be discontinued. Many CentOS users are currently loo ...

Lech Sandecki
8 December 2020

Ubuntu 16.04 LTS upgrade vs extended security maintenance

Ceph Ubuntu tech blog

Weighing the options with an Ubuntu 16.04 upgrade Ubuntu 16.04 LTS Xenial Xerus is transitioning from its five-year standard security maintenance window in four months, leaving many asking the question: can I manage an Ubuntu 16.04 LTS upgrade by April 2021, or do I need more time to plan this migration? In the Less than ...

Lech Sandecki
11 November 2020

Less than 6 months to Ubuntu 16.04 ESM: 6 things to prepare

Apps Ubuntu tech blog

Ubuntu 16.04 LTS Xenial Xerus will enter the extended security maintenance (ESM) period in April 2021. This article explains the ESM period and provides a guide for six key considerations when planning a migration path from Ubuntu 16.04 LTS. Contact us with your ESM questions What is ESM? Every Ubuntu Long Term Support (LTS) release ...

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