Didn't Aztech get rid of the blood mages a while back? Maybe after they tried to take over the company (also, the world)?
It was
Corporate Download which described Aztechnology as almost purged from the blood mages following the events of the Dragonheart trilogy and the failure of "Mister Darke", with a few remaining hiding
from the management. But it went like no one really took notice and most gamemasters and players kept the connection alive because at that point they were way too much established and even entrenched as generic villains.
Street Magic described blood magic as common thing in Aztlan, and
Corporate Guide restored the blood mages faction within Aztechnology, introducing for the first time the "Smoking Mirror" name. However, that was set to happen way earlier had
Shadows of Latin America been released, from which the text featured in
Corporate Guide was actually taken.
That was the Blood Mage Gestalt, and they were kicked out in... Actually, I don't remember. Sometime between 2055 and 2064? Anyway, they are back. These days they call themselves "The Smoking Mirror".
The Gestalt was a specific group of Aztlaner blood mages, described in
Threats, who used specific ritual magic. If anything, they rather looked like they were a tool for the actual blood mages' faction leaders.
The front leader, "Mister Darke" aka "Oscuro" was supposedly killed at the end of the Dragonheart trilogy in 2057 or 2058. He possibly was one named Geraldo Solis, which would mean he survived (
Loose Alliances also introduced another survivor, Abd El-Hameed Hassani, a Panamese of Lybian ascent, who moved to become the head of the Apep Consortium).
In Shadowrun there is such a thing as an Omega order, which permits full-out economic and physical war against a corporation without repercussion. They are only issued (or issueable) by the Corporate Court; this is one of the things that the Court was originally created for, to prevent the chances of full-blown war among the AAA corporations. (The Ensenada Strike was a Corporate Court 'Omega order' warning shot.) From what I remember, one particular corporation can be made the Court's executor, usually a AA or AAA that was recently and directly harmed by the company to be so 'executed'; the Court also has the option to simply declare open season.
So while 'protocols' might be stolen, it isn't going to change anything, and no single megacorporation, or even a minority subset of the Big 10, is going to be able to wage all-out war against the rest in order to dominate the world. Too much collateral damage, and who the hell would you sell your products to? Remember, the corps are about making money, not about blowing shit up - unless the latter is an advertisement for the former. 
In
Corporate Shadowfiles, the Omega Order was described as the highest possible level of sanction, an unlimited mandate that allowed every megacorporation (not just those represented on the court) to seize or destroy any assets of the offending corporation. So the Omega Order was specifically a case where the court wasn't designating any executor for its mandate or limiting the level of damages to be delivered.
Corporate Guide presents conflicting views on what Omega Orders are. To the best of my understanding, the main text considers there is an Omega Order every time a sanction is carried out by one or several corporations who were not part of the original dispute. It even labels as an Omega Order the hit on Art Dankwalther (who was a physical person, not a corporation).
It's also
Corporate Guide who first mentions "Omega protocols" as emergency plans that give the court a short track to activate a number of megacorporate military assets. So the protocols may give key intelligence on each of the megacorporation strategic assets, including their location and capabilities.