May have picked up virus
Yesterday I was looking for information on a person and came across a death notice. I clicked on it knowing that they had been ill. I got a notice that I was on an infected website and to click on the logo to scan now. I did not, instead I shut the page down. Now I am getting notices in the corner of my screen showing my iCloud is being hacked, my system is hacked. My history showed TotalAVSecurity before I deleted past history. I am still getting these notices. Attaching screenshots of warning. How do I get rid of this. Should I get an antivirus?