Safari Version 9.0.1 (11601.2.7.2)
This was not an issue under the final beta version of 10.11.1
Yes, i got this just now (and then hit “ignore this warning”):
Reported Attack Page!
This web page at www.freerepublic.com has been reported as an attack page and has been blocked based on your security preferences.
Attack pages try to install programs that steal private information, use your computer to attack others, or damage your system.
Some attack pages intentionally distribute harmful software, but many are compromised without the knowledge or permission of their owners.
The reason (https://www.google.com/transparencyreport/safebrowsing/diagnostic/index.html?hl=en-US#url=http://www.freerepublic.com):
Site Safety Details
Some pages on this website send visitors to the following dangerous websites: sssfc.com and aim.org.
More information
Don’t panic. Users sometimes post bad content on websites that are normally safe. Safe Browsing will update the safety status once the webmaster has cleaned up the bad content.
Safety tips. If you want to know more about how to protect yourself from malware, visit the Google Safety Center.
Webmasters. If you are the owner of this website, the article “Webmasters help for hacked sites” explains how to clean up your website and request a review (https://www.google.com/webmasters/hacked/).
More: http://iwebchk.com/blog/how-to-fix-website-blocked-by-google-safe-browsing/