Google may have sparked the Silicon Valley anti-poaching scandal when the company infuriated Steve Jobs by attempting to lure members of Apple's Safari team to work on Google's then-nascent browser effort, according to internal emails revealed in new court filings.

Jobs was "very agitated" when he heard of Google's recruiting efforts, Google co-founder Sergey Brin wrote to members of the search giant's executive management group in early February 2005. An agreement not to recruit from one another was in place less than one month later, court documents obtained by PandoDaily show.

"I told him we were not building a browser and that to my knowledge we were not systematically going after the Safari team in particular," Brin wrote following a phone call from Jobs before revealing an internal browser project a few sentences later: "I did not mention we may release an enhanced version [of Mozilla Firefox] but I am not sure we are going to yet," he said.

Former Google engineering chief Alan Eustace and former Google staffing director Arnnon Geshuri followed up, telling Brin that the company had in fact been actively recruiting at least three members of the Safari team. Eustace said that he had been after one of the engineers, whose name was redacted from the documents, for months because that developer was "absolutely one of the best in the world at browser technology."

Brin received another "irate call" from Jobs a few days later, and revealed Jobs's threat in a followup email:

"Basically, he said 'if you hire a single one of these people [from the Safari team] that means war,'" Brin wrote. He then went on to suggest that Google temporarily stop recruiting from Apple's browser team, just nine days before the first mention of the anti-poaching agreement between the two companies.