Sometimes fraudulent web sites might send you messages to try to make you do something that you shouldn't. For example, you might get errors like "System Mac OS is infected. Choose an action to restore the system".
In most cases, there is nothing genuinely wrong, and the messages are just a nuisance (unless you do what they tell you to do, which you generally shouldn't). To stop a web site sending you unwanted messages, follow these steps:
In Safari, go to Preferences. Then click Websites. Then click Notifications in the list on left. Then look through the list and remove anything that looks suspicious.
Important Note
I have tested that this tip works, but there are many possible ways it might cause problems because you have a different version of the system, a bad internet connection, and many other things. So I can take no responsibility if it causes problems. I'm sorry if it does, but that risk is yours!
I usually write a blog post about once a week. The latest post can be viewed here: Stand up for Science: Any sufficiently advanced technology is indistinguishable from magic. (posted 2026-09-09 at 10:41:12). Or go to the Home Page of My Blog to choose a post to view.
I do podcasts too! You can listen to my latest podcast, here: OJB's Podcast 2026-06-15 The First Trillionaire: Ignore them, and join me in celebrating true brilliance! Or subscribe to my podcast RSS feed, on my RSS Feeds page.
Latest Site News and Notifications (Desktop): You are currently viewing OJB's web site, version 2.4 which has some major changes, and possibly errors! Please report any problems to ojb@mac.com.