Some webmasters attempt to fool search engines by scattering invisible or poorly-visible keywords around their sites. Site users usually can't see this kind of text, but indexing bots can. Examples of this:
Sometimes, this text is put there by a hacker instead of the webmaster.
First of all, you'll need to remove the hidden text from your site. If the text is genuinely useful to your site's users, then you'll need to make it visible. If you're sure that you didn't put that text on the site, then check to see who else has admin access and withdraw privileges from anyone who seems to be abusing them. If you think that the hidden text was put there by a hacker, then you need to change your site's access password and follow our security guidelines.
After the violation has been rectified, click I've fixed everything in the Violations section in Yandex.Webmaster. Restrictions in response to this kind of violation are usually lifted within a month. Upon resolution, the violation notification will disappear.
The I've fixed everything feature is available once per month for each individual site. Keep this in mind and only click it when you're absolutely sure that you've taken care of all the violations present on your site.
If several people have management rights to your site, a specific person should be delegated to re-send the site for checking at a particular time. None of the admins will be able to use the button again for a month.
No. If this trick improves the user experience, then it is, of course, not considered a violation. For example, you might hide part of a long text that could bore some visitors, while still leaving other users the opportunity to expand and read it in its entirety.
If the notification disappears, it means that our algorithms no longer see the violation on your webpages. It might take some time for these changes to show up in search. This usually happens after one or two updates of the search engine database, which takes about two weeks on average.