There are levels, but the danger is that some person with sensitive information may communicate the information using an insecure service. For instance someone might remark that the military appears to be building a large underground structure near their farm, the US could then use this information to locate a newly build ICBM silo.
The levels of action that a nation could take to protect itself are:
1. They could train people who have access to sensitive information not to use any US service. This is what the US has done asking some members of the intelligence community to not use Skype and other services due to worries about its insecurity. This is probably common training for handling sensitive information in most nations.
2. They could filter such services at government offices, schools and sensitive sites. For instance no company can get defense contracts unless they have a policy that prevents their employees from using gmail. This is probably the most likely additional action that will taken and it will hurt US business.
3. They could filter such services at the national level. China (1 billion people) already does this, I wouldn't be surprised if Russia started. It's unlikely to happen on a global scale but each country that bans another US service hurts the economy.
We saw this happen with US crypto export controls, the market spoke and companies began switching to non-US software.
Additionally there is a very real possibility of backlash against US companies. It makes them uncool and political hot potatoes, who wants to use a phone made by some pet of the NSA.
The levels of action that a nation could take to protect itself are:
1. They could train people who have access to sensitive information not to use any US service. This is what the US has done asking some members of the intelligence community to not use Skype and other services due to worries about its insecurity. This is probably common training for handling sensitive information in most nations.
2. They could filter such services at government offices, schools and sensitive sites. For instance no company can get defense contracts unless they have a policy that prevents their employees from using gmail. This is probably the most likely additional action that will taken and it will hurt US business.
3. They could filter such services at the national level. China (1 billion people) already does this, I wouldn't be surprised if Russia started. It's unlikely to happen on a global scale but each country that bans another US service hurts the economy.
We saw this happen with US crypto export controls, the market spoke and companies began switching to non-US software.