Cloudflare experienced an issue early Friday that brought down some of the world's most popular websites for a few hours before a fix was deployed.

Shares of the company were down 4.5% in premarket trading after global websites went down and Cloudflare said it was investigating.

Web infrastructure provider says it has implemented a fix after users had seen ‘a large number of empty pages’

Cloudflare said the outage was caused by a change made to how the platform’s firewall worked.

Cloudflare experienced an issue early Friday that brought down some of the world's most popular websites for a few hours before a fix was deployed.