SysOps Automation

What is OS Patching?: Securing Systems in Linux and Windows

Operating system (OS) patching is one of the most important defences in protecting digital systems from vulnerabilities and preserving the integrity, security, and optimal performance of both Linux and Windows environments. It is a preventative step intended to resolve and lessen possible security threats brought about by errors, malfunctions, or vulnerabilities in the operating system’s source code.

Understanding OS patching:

OS patching is the process of applying updates, repairs, or upgrades to an operating system’s software to resolve security vulnerabilities and defects or improve functionality. Patches may contain security upgrades, bug fixes, performance enhancements, and new features. The fundamental purpose of OS patching is to lower the attack surface by repairing flaws that cyber threats might exploit.

The importance of OS Patching

Security Enhancement

Patching helps eliminate flaws that hackers could use to obtain unauthorised access or jeopardise system integrity. Cyber assaults frequently target recognised weaknesses, and timely patching reduces your chance of being a victim of such an attack.

Adaptation to developing attacks

Cyber attacks are constantly developing, and fresh weaknesses are discovered regularly. Patching the operating system is a proactive plan for staying ahead of possible security concerns and adapting to new dangers in the digital ecosystem.

Stability and Performance

Patches not only address security holes, but they also enhance the general stability and performance of the operating system. Bug fixes and speed improvements help to make computing more fluid and efficient.

Compliance Requirements

Many sectors and organisations are subject to regulatory compliance requirements that demand frequent security upgrades and patches. Failure to follow these laws can have serious implications, including legal penalties and reputational harm.

OS Patching in Linux

Linux takes a unique approach to OS patching because of its open-source architecture and community-driven development.

Package Management

Package management systems, such as APT (Advanced Package Tool) for Debian-based systems or YUM (Yellowdog Updater Modified) for Red Hat-based systems, are extensively used in Linux distributions to handle OS updates. These programs make it easier to obtain, install, and manage software packages, including operating system patches.

Kernel upgrades

Linux kernel upgrades are critical for improving security and performance. Users may obtain kernel upgrades using the usual package management system, depending on the distribution.

Rolling Releases vs. Set Releases

Some Linux distributions use a rolling release strategy, giving updates continually, while others use set release cycles. Users using rolling release distributions receive the most recent changes instantly as they become available, resulting in a more dynamic and continually updated environment.

OS Patching in Windows

Windows is a common operating system seen in both individual and business settings. Each version of Windows has unique OS patching strategies:

Windows Update

The key tool for handling OS patches in Windows is Windows Update. It includes security patches, bug fixes, and feature enhancements. Users may arrange Windows Update settings to download and install updates automatically or manually.

Patch Tuesday

Microsoft releases security patches on a weekly schedule known as “Patch Tuesday.” Microsoft publishes continuous updates resolving safety holes and other concerns on the second Tuesday of each month. Patching techniques are frequently planned around this timeline by system administrators.

WSUS (Windows Server Update Services)

WSUS is frequently utilised in business situations to handle the deployment of Windows updates. It enables administrators to govern update rollout inside their network, guaranteeing a consistent and safe update procedure.

Best Practises for OS Patching

  • Regular Monitoring and Evaluation

Establish a process for tracking and analysing the release of OS fixes. Keep up with OS supplier security bulletins and advisories to detect important upgrades as promptly as possible.

  • Patches for Testing in a Controlled Environment

Before deploying fixes in a production system, confirm compatibility and eliminate any interruptions by testing them in a controlled and isolated environment. This is especially critical for corporate systems, where downtime can have serious effects.

  • Automate Patching Processes

Whenever possible, automate the patching process to guarantee the timely distribution of updates. Automation reduces the possibility of human mistakes and guarantees that systems are patched regularly.

  • Critical Vulnerabilities Should Be Prioritised

Prioritise fixing major flaws that represent a high risk to the system’s security and functionality. Because not all fixes are equally important, prioritise fixing the most serious vulnerabilities first.

  • Before patching, backup your systems

Make a backup of important systems before deploying fixes. In the unlikely event that a patch causes unexpected problems, keeping a backup allows a speedy recovery with little data loss or delay.


OS patching is a critical component of cybersecurity, acting as a preventative strategy to reduce possible risks and improve the general resilience of operating systems. Understanding patching techniques and following best practices are essential for maintaining a safe environment, whether in the Linux or Windows ecosystem. Individuals and organisations may keep ahead of developing risks and contribute to a more secure digital ecosystem by prioritising timely updates, testing patches, and using automation.

Post Written by Shivam Mahajan

Shivam Mahajan is an editor skilled in SysOps, Tech, and Cloud. With experience at ServerTribe and other companies, he simplifies complex technical material for easy understanding.


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