Okupe, who served under Jonathan from 2012 to 2015, revealed this on his official Twitter handle.
He said he had nothing to do with the arms scam which cost the country over $15bn in stolen funds.
Okupe said, “I was not paid arms deal money. The NSA paid for the running of my office monthly from August 2012. Dasukigate was in 2014. I did not take part in the campaign.”
Okupe however received bashing from several of his followers online who wondered why his office should get security votes.
A Nigerian, Ojezs, asked, “You’re just implicating yourself. Is it the NSA office that employed you?”
Another user, Ayoola Ayodeji, wrote, “You probably mistake some of us for hungry people. A day will come when you won’t be able to sleep because poor people are outside your gate.”
In his response, Okupe wrote, “You guys are idiotic. You wait and pray for the innocent to be punished. It will not happen. You must think some of us are terrified.”
It had been reported that Okupe got at least N1.6bn off Dasuki in three shady cyber security contracts.