Safari Update

There will be an increasing number of websites complaining that version of Safari is too old. The alternative is to use another browser.

I suggest Brave: https://brave.com and click the Download Brave button.

Brave is updated routinely and its latest version will work on your Mac.

Distant second choice: https://www.mozilla.org/en-US/firefox/new/

Nearly all websites use some kind of encryption for data transfer, but that encryption can use a number of different techniques. The Safari version incorporated in High Sierra has not been updated for years, so it will be unable to keep up with websites requiring more recent security protocols. For more on the subject read about Digital certificates and encrypted websites in Safari on Mac - Apple Support and the link within it Avoid fraud by using encrypted websites in Safari on Mac - Apple Support.

Not all websites require encryption, example: http://www.bitsavers.org/ is not encrypted because there is no compelling reason for it to require encryption. Conversely however there are no compelling reasons to not use encryption — unless of course your intended audience only has old equipment that can't cope with more recent protocols.

Mr. Galt, you said:

”There will be an increasing number of websites complaining that version of Safari is too old.”

Would you mind explaining why this is?

Hello AntMac12!

Here’s how to Update to the latest version of Safari - Apple Support.

I hope this is helpful. Good Luck!

Thank you kindly Mr. Galt! 😊 I understand now.