Dylan72 said...laurie said...
(and only affects firefox?)
...
http://safebrowsing.clients.google.com/safebrowsing/diagnostic?client=Firefox&hl=en-US&site=broke://coastalwatch.com/
I think you're misreading the URL there. The "client=Firefox" bit refers to the fact that YOU visited safebrowsing using Firefox, not that the "vulnerability" affects Firefox.

This could descend into a Firefox-vs-IE debate.

Changed it to
safebrowsing.clients.google.com/safebrowsing/diagnostic?site=http://coastalwatch.com/ .. and still the same report
I checked the report on the "Malicious software is hosted on 1 domain(s), including jpsb.meibu.com/", and it says this domain hosts ~ 245 malicious scripts.
I'd guess that a hacker has managed to insert a link to their meibu site, which then chooses the appropriate script to hack whatever browser is present at the time.
Firefox presents the blocking screen because they have a partnership with Google, whereas Microsoft & Apple aren't really mates with Google so don't use the google service.
Again .. only speculating.... all will be revealed in time...