I use a stand alone desktop running ubuntu 22.04. The admin password has been changed (hacked). How do I regain control as my password is no longer accepted, and I can not use sudo, or choose a new password in user settings? I have tried a posted solution using recovery options and root shell, but despite following instructions carefully, my attempt was unsuccessful. In addition, I am unable to install security updates. I located a number of trojan horse viruses using clamshell and have quarantined them.
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5see How do I reset a lost password (using recovery mode requires me to type the password)? – Rinzwind Aug 29 '23 at 15:27
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4and if you did not do it: Changing the password is not enough... you need to reinstall your system. – Rinzwind Aug 29 '23 at 15:31