The best way to report a problem is to send an e-mail to firstname.lastname@example.org and include a complete description of the problem. CESNET-CERTS members will deal with the reported incident as soon as possible and will inform you that the problem, if any, has been solved and removed. You will receive a reply from email@example.com and the e-mail will be signed by our PGP Key.
Any offence against the Czech law, e.g.,
We do not expect everyone to be a computer security expert. That is a role of the CESNET-CERTS team.
We do not even expect everyone to be able to properly recognize, classify and describe a security incident. So if you hesitate whether to report or not to report, report it. Any missing information will be asked for if necessary.
Thanks for your cooperation!
The CESNET-CERTS Team