An individual has reported frequent alerts indicating their system is infected with multiple viruses. These prompts advise urgently clicking a link to resolve the issues. A review reveals no authentic antivirus software is present. What is the INITIAL step to be taken in reaction to these signs?
Reach out to a cybersecurity expert for assistance.
Ensure all authorized software on the computer is up to date.
Execute a scan for malware using any installed security software.
Locate and remove any fake antivirus programs installed.