Former Uber Technologies cyber security chief Joe Sullivan is joining Cloudflare as its new chief security officer.
Sullivan was fired from Uber last year over what the ride-hailing firm said was his role in the handling of a 2016 data breach.
Sullivan, who also worked for Facebook and eBay and as a cybercrime federal prosecutor, said in a blog post that he believed the move would help him realise an ambition to secure every corner of the internet.
"In 2016, while traveling the United States to conduct hearings on the condition of Internet security as a member of President Obama's cyber commission," he wrote, he had grown frustrated at the lack of money and time spent by governments and law enforcement to secure the online world.
"There are no digital equivalents to the Department of Transportation or National Highway Traffic Safety Administration and limited government technical contribution to building a safer environment," he said.
"I grew frustrated because I believe we need to invest as much in the upkeep of the sidewalks of the Internet as we do on making every street corner safer.
"The Internet may be the only context where governments spend less on preventing harm than they do on punishing misbehaviour.
"It is certainly the only context where developing businesses are left to their own devices to fend off nation states - and then potentially chastised by regulators if they fail to do it well."