Basic rules of safe online behavior












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            Cybersecurity is not just about technology – our everyday behaviour plays the most importa

            Most security incidents are not due to complex attacks, but to minor inattention - for exa
            a fraudulent link or using a weak password.
            The good news is that protecting your account and data does not need to be complicated. Ad

            habits that will significantly reduce the risk of misuse and help you use university syste
            internet in general safely.





            Use strong and unique passwords
            Your password is like an apartment key – don't leave it to a stranger and don't use the sa
            doors.

            Create longer passwords (at least 12 characters) and combine letters, numbers and special 
            Never share your password with anyone – not IT staff or colleagues.


            Update your devices
            Updates aren't just about new features – they also fix bugs that attackers can exploit. Tu
            updates so your computer and mobile are always protected.


            Watch out for suspicious emails
            Phishing emails often appear as messages from colleagues, banks or universities. If you fi

            suspicious - such as an unexpected login request or an attachment from an unknown sender -
            open the message and report it to local IT support.


            Install software only from verified sources
            Avoid unknown apps or downloadable links from unofficial websites.
            Use software approved or provided by your faculty on university computers.


            Work only on secure Wi-Fi networks
            When working with university systems, only connect to secure networks – such as Eduroam [ 

            "MYLIFEEN-24.html "] . Use public Wi-Fi networks (e.g. in a café or railway station) only 
            to access sensitive data.


            Lock your device when you leave
            Whether it's an office computer, a laptop or a mobile phone – always lock it when you leav
            protects not only yourself, but also university data.



            These simple steps can significantly reduce the risk of account hacking, data leaking, or 

            University security starts with each of us.



            Do you need advice or report a security incident?



            Detailed procedure can be found in the Security Incident Reporting section [ URL "https://
            incident_reporting/"] , where you will learn how to describe the incident, to whom to send
            solution is progressing.

            Frequently Asked Questions (FAQ)
            How do I know if an email is fake?
            • Suspicious sender address, urgent tone "forces you to act immediately", email text conta

              unknown links or attachments - these are all warning signs.
            What should I do if I receive a suspicious email?
            • Do not open links or attachments. Send it to faculty IT support or report the security i

            • Detailed procedure can be found in the Security Incident Reporting section [ URL "https:
              en/incident_reporting/"] , where you will learn how to describe the incident, to whom to
              the solution is progressing.

            What to do if I suspect someone has got my password?
            • Change your password immediately (in CAS or the relevant system) and inform the faculty 
              administrator.

            Can I use the same password for a university and personal account?
            • Absolutely not. Each environment should have its own password.
            Is it safe to operate over public Wi-Fi when I use a VPN?

            • VPN [ URL "MYLIFEEN-25.html "] reduces but does not remove the risk. If possible, use th
              "MYLIFEEN-24.html "] university network or your own mobile hot spot.
            Can I use a university account on personal devices?

            • Yes - but the device must be updated and secure.
            Important links
            More information, current threats [ URL "MYLIFEEN-48.html "] , recommendations and documen

            cybersecurity:
            • Dangerous emails [ URL "https://security.cuni.cz/en/emails/"]
            • Dangerous websites [ URL "https://security.cuni.cz/en/webs/"]

            • Treacherous passwords [ URL "https://security.cuni.cz/en/passwords/"]
            • What to protect the most [ URL "https://security.cuni.cz/en/mostimportant/"]
            • Documents and instructions on cybersecurity [ URL "https://security.cuni.cz/en/documents

            • Useful links for solving security problems [ URL "https://csirt.cuni.cz/en/links/"]