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Stefan Feist

About Stefan Feist

This author has yet to write their bio.
Meanwhile lets just say that we are proud Stefan Feist contributed a whooping 97 entries.

Entries by Stefan Feist

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New zero-day vulnerability: How to protect yourself from Follina

The critical zero-day security vulnerability Follina in Microsoft Office is currently making headlines. Particularly threatening is the fact that it is sufficient for an infection to trigger a hover preview in a downloaded file. We show you how you can protect yourself with NoSpamProxy.

31.05.2022 by Stefan Feist
All Topics, News, NoSpamProxy Encryption, Tech & Support

Revoked SwissSign certificates

In some cases, certificates already issued by SwissSign were withdrawn because in these cases the Common Name (CN) did not correspond to the prescribed first name last name format. We show you how to apply for new certificates for the affected users.

09.05.2022 by Stefan Feist
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DigiCert available as a certificate authority as of November 2021

Starting with the next update for NoSpamProxy Server 13.2, DigiCert will be available as a certificate authority. Customers will be able to easily integrate their S/MIME certificates from DigiCert.

05.11.2021 by Stefan Feist
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Imminent danger from docx files: How to protect yourself (Update)

Microsoft is currently warning customers about a serious security vulnerability in connection with docx files. The dangerous thing about this vulnerability is the fact that simply opening the respective Word file is sufficient to execute the malicious code and enable remote code execution. An additional activation of any macros is not necessary. Read on to find out how you can protect yourself from this danger.

16.09.2021 by Stefan Feist
32Guards, 32Guards, All Topics, NoSpamProxy Cloud, NoSpamProxy Protection

32Guards Reports: Short URLs in a Haystack

Short URL services such as bit.ly are consistently used by criminals to get phishing links past email security solutions and onto their victims’ computers. In this article, we show you how short URLs are used as part of spam campaigns and why 32Guards and its dedicated web crawler offer ideal protection against attacks.

02.06.2021 by Stefan Feist
32Guards, 32Guards, All Topics, NoSpamProxy Cloud, NoSpamProxy Protection

One year of 32Guards – and that’s just the beginning 

At the turn of the year 2019/2020, the time had come: 32Guards began to send assessments of emails to the participants of the 32Guards beta. Over the course of 2020, the repertoire of detections grew significantly. In this article, we will look back at a number of developments and show how 32Guards became increasingly active, especially in the second half of 2020.

04.02.2021 by Stefan Feist
All Topics, News, NoSpamProxy Protection

Emotet infrastructure shattered

In a joint operation, law enforcement agencies from Germany, the Netherlands, Ukraine, Lithuania, France, as well as England, Canada and the United States have smashed the infrastructure of the Emotet malware. Emotet was previously considered the most dangerous malware in the world and in the vast majority of cases was used to extort ransom from victims.

28.01.2021 by Stefan Feist
32Guards, All Topics, NoSpamProxy Protection

32Guards offers protection against dangerous short URLs

In his analyses, 32Guards has repeatedly noticed short URL services in a particularly negative light in recent months. These URL shorteners generate an alternative, short URL that can be used on Twitter, for example. In this way, the number of characters used in a post can be reduced. The fact that the use of these services can cause problems is, of course, already due to the fact that the actual target of the URL is not recognizable – virtually an invitation to phishers and other cybercriminals.

20.01.2021 by Stefan Feist
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