Phishing Filter

Recently I've have been bombarded with phishing warnings about sites I consider reputable.

One is a national newspaper,the other is a well known retail site.

I logged into the retail site using Roboform password manager,which used previous info. and the same URL address that had not caused any phishing filter reaction previously.

On this occasion,the filter tried to prevent access on several occasions,which I over rode.

Spoke to the retailer,who couldn't report any similar relevant comments from customers.

Seems like false positives to me. Today everything seems back to normal again.

Could you please verify the procedure regarding false positives and if they are possible.

Thanks Mike