1.1 Legal situation and security

The Adobe Reader displays a warning with the signature
After opening the signed document with Adobe Acrobat Reader, do you get the warning "There are problems with at least one signature"? In this cas...
Fri, 24 Jul, 2026 at 11:34 AM
log4j security information
Description: A security problem has been identified with the component log4j version 2.x. Source: https://logging.apache.org/log4j/2.x/security.html ...
Wed, 22 Dec, 2021 at 10:15 AM
Is the system legally secure?
The concept of legal certainty is often not specified and it is often unclear what it means. A term that better describes the actual question is "legal...
Mon, 29 Jun, 2026 at 12:10 PM
When do I need a qualified electronic signature (QES)?
In Germany there is freedom of form for agreements of any kind. Thus, contracts can be concluded by handshake or in writing or in any other form. This free...
Mon, 29 Jun, 2026 at 12:15 PM
Must a surpreme court ruling be awaited?
It is completely wrong to wait for a supreme court ruling. This statement would mean that the interested party would have to wait forever. Judicial jurisdic...
Tue, 15 Sep, 2020 at 4:14 PM
How is manipulation prevented?
With signotec products for the signature of PDF documents, the misuse of the signature is excluded according to today's state of the art. Only algorithm...
Mon, 29 Jun, 2026 at 12:17 PM
PHP2Shell – security vulnerabilities in PHP (October 2026)
What is PHP2Shell? PHP2Shell refers to two critical security vulnerabilities in PHP that were disclosed on 21 October 2026. On servers running an unpatched...
Thu, 22 Oct, 2026 at 1:48 PM