It's not like ISPs and tech companies went to the NSA and offered up their data--there is no proof at all of that. What the evidence shows is that the government used its force of law to compel cooperation from these companies.
The people's tool for controlling the force of law is politics. So, being politically connected is an important part of playing defense against government action.
Whether Condoleeza Rice is the correct person to fulfill that role is in the eye of beholder. I certainly don't fault people for opposing any connection to her. But I would fault anyone who thinks that that is a universal sentiment. There are quite a few people (in government and out) who still respect and perhaps even like her.
That may be true. It probably is true once you reach the numbers-beginning-in-B level.
Nevertheless, there are lots of political operatives, former officials, and other contacts you could find without stooping as low as a former member of the Bush administration.
Direct approval of torture.
From Wikipedia's page on war crimes:
A war crime is a serious violation of the laws and customs of war (also known as international humanitarian law) giving rise to individual criminal responsibility. Examples of war crimes such as:[1]
murdering, mistreating, or deporting civilian residents of an occupied territory to slave labor camps
murdering or mistreating prisoners of war or civilian internees
Condi seems to fit the bill perfectly.
Political links to the US govt are also a bit of a hazard-- the more you willingly approach them and enable them, the more they will take from your pocket and the more they will push you around. The Snowden leaks have painted a bad picture of the US companies as a result of their compliance with ridiculous government policy, and these companies are being scrutinized fiercely as a result.