Re: Isn't this already known?
Yes you are correct! Advanced Persistent Threats(APT) are already a reality in the web world. Only a very blended defense can possibly hope to indicate the level of infection. Now, I will temper that with a nation state actors warning, that will defeat any defense you have - but the behaviors of your system will belie this threat! If you suspect this - I recommend you trash this computer and get another one, the infection level is so pervasive that nothing - not hardware or software is forever trustworthy from then on!!!
Even your ISP could be compromised by then! Don't admit to the depth of your suspicions to the service provider - just explain the symptoms and complain in an ordinary way. Do NOT admit that your paranoia includes such a calamitous attack. Just concentrate on their vulnerabilities and berate them for it - and try to threaten them with state action to their service reliability and reputation. It is all you can do - with the level the enemy has at his disposal. I have friends with Intellectual Property rights that could affect the national security of nations, that have been totally pwned with a combination of Apple products and Android devices; so don't assume this will be a protection. Never assume anything - my TELCO is under attack for service reliability for just discussing the problem I am having with my clients. The FBI and all other federal agencies are not even as good as keystone cops - so just forget any help from your government sources. I include UK sources as well.