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Udo Riedel


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3 min read

Textbook cyberattack on US pipeline operator

By Udo Riedel on May 25, 2021 1:10:44 PM

Source: iStock

Stay on the "bright side of life".

Recently, the attack by the "Darkside” hacker group on the pipeline operator Colonial in the USA has once again brought the topic of IT security into the spotlight. The attack was covered in mainstream news and caused panic buying as well as petrol shortages on the East Coast of the U.S., and even led to a state of emergency being declared in some U.S. states. This shows that attacks, specifically those targeting companies in the critical infrastructure field, can have enormous impacts on society.

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6 min read

Microsoft Exchange hack - when the patch came, it was already too late

By Udo Riedel on Mar 24, 2021 3:25:02 PM

Bildquelle: iStock

Among a high-profile wave of cyberattacks in March 2021, tens of thousands of email servers worldwide fell victim due to a vulnerability in the Microsoft Exchange Server. Through a so-called zero-day exploit, the vulnerabilities were targeted by a previously unknown Chinese espionage group called "Hafnium.” As a result, national authorities warned thousands of companies to quickly close the gap in their own Exchange servers as Microsoft released patches to fix the vulnerabilities in Exchange servers shortly after.

In this paper, we will clarify the temporal process: What happened? Could the attacks have been prevented?

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