Pointed out that there is a possibility that you can avoid website advertisement just by adding "." to the URL


Pointed out that there is a possibility that you can avoid website advertisement just by adding "." to the URL

When you browse a website, there are often too many advertisements that make it difficult to see. Even if you use an application that can block ads, the message "Please turn off the ad blocker" will appear on the website, and the website will be more difficult to see. Meanwhile, instead of using an ad blocker, a report was posted on Reddit that "Ads will be turned off just by adding "." to the website URL".

fyi: You can bypass youtube ads by adding a dot after the domain :webdev

For example,……

In the URL, put "." after ".com",……

Then, you can turn off the advertisement display on some websites.

This phenomenon is a special case that pierces the website where the host name cannot be normalized. You can see the website, but because the host name on the browser does not match, cookies andResource sharing between origins (CORS)Is not working properly. Not just website advertising,PaywallIt was also pointed out on Reddit that there is a possibility that the paywall can be disabled on the website that has.

Other Reddit users have pointed out that websites such as YouTube that can create accounts may log out if you add "." to the URL while you are logged in. In addition, while there are people who are happy to say that it is possible to easily eliminate the advertisement display without using software or extension functions, it is not a method that can be used on all websites. It was better to introduce an ad blocker."

The problem caused by adding "." to the host name of the URL was discussed about 19 years ago as a means of avoiding ads on RedditBugzillaBut it was reported.

134402-URLs with trailing dots in host names (FQDN) produce cert name mismatches

What was reported in Bugzilla wasMozilla SuiteWhen accessing a website with ".", the browser incorrectly recognizes the host name by adding "." in the URL, and a security warning is displayed. Discussions have been going on in Bugzilla for about 14 years, but similar bugs may occur in Google Chrome and Safari, so it was not mentioned as a big issue.

The method of identifying the location of websites on the Internet by URL has been used since 1990. However, because it is long and complicated, URLs have many drawbacks, and in addition to the above-mentioned easy avoidance of advertisements and security errors, there are many cases of malicious use in phishing scams. To improve the safety of the web, Google hasURL should be lost", but the reality is that no epoch-making system as a substitute for URL has appeared at the time of writing the article.

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