While browsing the internet I got redirected a suspicious website. I have F-secure protection but it can't find viruses.
This is most likely not a virus, but an adware that is in your browser.
First you should check if there is anything new on your browsers toolbar, or new unknown extensions/add-ons.
Uninstall extension on Chrome
Uninstall extension on Mozilla Firefox
Uninstall extension on Internet Explorer
Uninstall extension on Microsoft Edge
You should also try clearing the history and browser cache.
How to clear history on Chrome
How to clear history on Mozilla Firefox
How to clear history on Internet Explorer
How to cleat history on Microsoft Edge
If this does not help, try resetting the whole browser.
How to reset Chrome
How to reset Mozilla Firefox
How to reset Internet Explorer
How to reset Microsoft Edge
Article no: 000004694