For the past two days, my domain was hit by a series of hacks all originating from a one domain (Kintiskton LLC), which resulted in installing a malicious code on my site that makes Google detects it as a malware site
We restored our site from a backup and we changed passwords and such as a preventive measure, we appologise for the inconvenience that it might have caused any of you, I hate hackers, they are real bad people.

I too have been hit by this malware injection. It has happened 4 times now. I also repaired all files and changed passwords but it continues to happen. kintiskton llc has had a large number of visits to my site before each hack.
This is my first time getting the Google message.
Yes, they got into my Blogspot blog over 400 times – spent almost an hour and a half on the site, hitting every link I have. After doing some investigation, they appear to be a company registered in Australia but owned by a guy in Ohio. The hits are originating from Las Vegas. I did not get a malware warning going in (knock wood), but I’m still worried.
Posts online show this started back in December (2008). No one knows who they are; they may be Verizon, they may have something to do with copyrights, they may be scammers offering to sell webmasters “licenses” to operate their blogs/sites – no one knows.