Patches

What are patches?

The word „patch“ comes from English and means „flick“ or „patch.“ This describes its function quite well: just as a patch can cover a hole, patches close gaps in IT applications. Software applications are updated, improved, expanded, or corrected using patches. This can sometimes happen without the user’s intervention.

In general, there are four categories of patches: bug fix, hotfix, security patch, and update.

Bugfix: A bug fix corrects and removes software errors. When a program has a „bug,“ it leads to malfunctions or crashes, and the user cannot use the software as intended by the developers. Examples include: a function no longer being accessible, login not working, or the program closing on its own.

Hotfix: A hotfix also addresses software errors. The only difference from a bug fix lies in the urgency of fixing the error. Hence the name „hotfix“ – combining the English words „hot“ and „fix“ to suggest that this is a critical issue that needs to be resolved quickly. An example might be an impairment that leads to a high number of customer complaints or affects other applications or even production areas.

Sicherheits-Patch: A security patch addresses a vulnerability that poses a heightened security risk to the company. This is the case when criminal actors exploit existing vulnerabilities in software to gain access to systems, execute malicious code, and compromise the entire system. Zero-day vulnerabilities are particularly tricky. In such cases, cybercriminals are aware of the vulnerability and exploit it even before the software vendor knows it exists – and thus before a patch is made available to users. Known zero-day vulnerabilities include those affecting Microsoft Exchange Server. In these cases, attackers exploited the weaknesses before Microsoft was even aware of them.

Updates:

Updates are extensions and renewals of existing software. Unlike the above examples, updates are not primarily about fixing errors or malfunctions but about providing users with improvements and new developments – for example, new features, additional functions, or performance enhancements.

 

Why are patches important?

Patches and updates offer many benefits. Updates often improve performance and make applications easier and more efficient to use. They also ensure continued compatibility with other software applications or hardware components.

Above all, security plays a crucial role. If bugs and errors are not fixed in time, systems become more vulnerable to viruses, trojans, and other malware. Security patches should always be installed immediately. Only then can it be ensured that cybercriminals do not exploit these gaps to gain unauthorized access to systems.

 

How should you handle patches?

    1. Stay informed. If your company uses software applications, it’s advisable to keep an eye on developments related to that software so that you can respond quickly to any vulnerabilities. If you cannot do this yourself, consult your IT service provider.

      Note:

      Perseus offers all companies using the Cybersecurity Online Portal a threat newsletter that provides information on current security vulnerabilities.
  1. Install patches – especially security patches – immediately and without delay.
  2. Also, install software updates as quickly as possible.
  3. Establish a policy for handling patches and clarify responsibilities within your organization. Ensure that all employees are informed about the policy and know who to contact if needed.