The Drudge Report, the highly trafficked conservative news website, has been knocked offline for extended periods of time over the course of the last two weeks, succumbing to large distributed denial of service attacks, according to its founder, Matt Drudge.

And it’s a mystery who’s behind it all.

Drudge wrote on Twitter that a December 30 attack was the “biggest DDoS since [the] site’s inception.”

A DDoS attack is executed by using hijacked computers or electronic devices to flood a website with redundant requests, aiming to overload the website’s hosting server and render it unavailable.

But, according to cybersecurity experts who spoke to Business Insider, using such a method to take down the Drudge Report would not be easy.

The website is already equipped to handle a high volume of visitors and scale out to accommodate spikes in traffic. Moreover, a website that generates so many page views would likely employ strong defense measures, the cybersecurity experts said.