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Error: "Malicious site! The website has been flagged as a malicious site and has been blocked on the basis of your security settings"
This error message is generated based on information from Google's own databases, in particular using http://www.stopbadware.org/. The message may appear in English ("STOP! This Website Can Harm Your Computer!") or may not appear at all if you are not indexed by Google or are using a browser that is not based on Google checks.
If this does not concern your site, please refer to Google's help on this subject (https://support.google.com/websearch/answer/45449/?hl=en).
If it concerns your site, please read the advice below.
These instructions are given for information only and our support team will not be able to help you should you have any issue. Find out more: https://faq.infomaniak.com/2103
Actions to be carried out
Check the source code for the published page. There is probably additional code compared to pages which are still 'clean'. This may be caused by a malicious iframe or some other included element. Examples:src='http://domain.xyz/ forum/files/index.php' width='1' height='1' style='visibility: hidden;' or src="http://domain.xyz/images/RcDxCPn.html"> frameborder="0" width="1" height="1" scrolling="no" name=counter ?".
On the page in question, click "Why has this site been blocked?" and follow the instructions or click the link to https://support.google.com/webmasters/answer/163633.