请问这个英语句子里面定语从句怎么理解啊?current providers of ..是什么?

问题描述:

请问这个英语句子里面定语从句怎么理解啊?current providers of ..是什么?
They note the weakness of the social networks and e-mail providers which are the current providers of informal electronic passports.

which 以后的句子修饰的是providers
现在的不正式电子护照的提供者
current providers of 是······的目前提供者的意思