Decree no. 317/2014 Sb. – major information systems and their defining criteria (in Czech language)
Useful Tools
Virustotal.com – here you can test a suspect file or www page with more than seventy antivirus programs and blocklists. Caution – each uploaded file is automatically provided
for analysis to third parties, therefore do not use on files that may contain sensitive and personal information!
Have i been pwned? – the service collects published stolen log-in databases. You can test to see if your email is included.