Apple Users Can't Get Rid Of The New 'Super Cookies' That Track Private Web Browsing

Further to the article "Apple Users Can't Get Rid Of The New ‘Super Cookies’ That Track Private Web Browsing" https://ca.finance.yahoo.com/news/apple-users-cant-rid-super-180500863.html, is there a solution to resolve this security issue?
Here's an excerpt from the above mentioned article;
"Apple users are particularly vulnerable, as their devices do not have a function that lets users delete super cookies from their browsers.
Most websites place what’s called a “cookie” on visitors’ computers, which is used to track them and record their preferences. It’s how websites can remember your password, for example. Like your web browsing history, they’re easy to delete. If you use your browser’s “private browsing” mode they’re never saved in the first place — and advertisers can't track you, and other computer users can't go back and see what you looked at.
However, a flaw in a modern web security feature called “HTTP Strict Transport Security” (HSTS) allows websites to plant “super cookies” that can be used to track web users’ browsing habits even when private browsing is enabled.
Here’s how it works.
Security researcher Sam Greenhalgh writes that HSTS “allows a website to indicate that it should aways be accessed using a secure connection that encrypts your communication with the site.” This “flag” is then saved by your web browser, ensuring that any future visits to the website are secure. But this can also be abused, using this feature to store a unique number that can be used to track your web browser.
And because HSTS carries over into private browsing, it means the “super cookie” can be used to track you whether you’re attempting to cover your steps or not.
Greenhalgh says that Apple’s Safari web browser is especially vulnerable to the exploit. While clearing cookies on Mozilla’s Firefox, Google Chrome or Opera also erases HSTS flags, deleting the super cookies, there’s no way to do so on Safari on iOS devices.
This means that if you’ve had super cookies placed on your iPad or iPhone, there’s effectively no way to get rid of them short of reformatting the entire machine."

Hi all,
I tried this with IOS 7.1.2 Safari on an iPad retina and the super cookie did not persist after web data and history was deleted.
I also tried this with IOS 8.1.2 Safari on an iPhone 6, and the super cookie persisted even after deleting web history and website data.
Evidently it was ok on 7.1.2 and broken on 8.1.2.

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