@
Ranu:
Of course this website has been developed with security in mind. There are no critical vulnerabilities I'm aware of - otherwise I would take care of them immediately.
Unfortunately I was not able to find out how people were able to log in into other accounts in this case.
Therefore there is no reasonable way for me to make things more secure. Someone would have to tell me how this person or these people were able to hijack the accounts and if they did so using a vulnerability in the website.
As said before: In the vast majority of account hijack scenarios in the history of UnrealSoftware.de, the accounts were hijacked either
because of weak passwords, because of careless people ignoring the most basic security and password guidelines or via claiming and re-registering inactive e-mail addresses.