Networking and web security giant Cloudflare says the recent 8chan controversy may be an ongoing “risk factor” for its business on the back of its upcoming initial public offering.

The San Francisco-based company and former Battlefield finalist, which filed its IPO paperwork with the U.S. Securities and Exchange Commission on Thursday, earlier this month took the rare step of pulling the plug on one of its customers, 8chan, an anonymous message board linked to recent domestic terrorist attacks in El Paso, Texas and Dayton, Ohio, which killed 31 people. The site is also linked to the shootings in New Zealand, which killed 50 people.

8chan became the second customer to have its service cut off by Cloudflare in the aftermath of the attacks. The first and other time Cloudflare booted one of its customers was neo-Nazi website The Daily Stormer in 2017, after it claimed the networking giant was secretly supportive of the website.

Cloudflare, which provides web security and denial-of-service protection for websites, recognizes those customer cut-offs as a risk factor for investors buying shares in the company’s common stock.

“Activities of our paying and free customers or the content of their websites and other Internet properties could cause us to experience significant adverse political, business, and reputational consequences with customers, employees, suppliers, government entities, and other third parties,” the filing said. “Even if we comply with legal obligations to remove or disable customer content, we may maintain relationships with customers that others find hostile, offensive, or inappropriate.”

Cloudflare had long taken a stance of not policing who it provides service to, citing freedom of speech. In a 2015 interview with ZDNet, chief executive Matthew Prince said he didn’t ever want to be in a position where he was making “moral judgments on what’s good and bad,” and would instead defer to the courts.

“If a final court order comes down and says we can’t do something… governments have tanks and guns,” he said.

But since Prince changed his stance on both The Daily Stormer and 8chan, the company recognized it “experienced significant negative publicity” in the aftermath.

“We are aware of some potential customers that have indicated their decision to not subscribe to our products was impacted, at least in part, by the actions of certain of our paying and free customers,” said the filing. “We may also experience other adverse political, business and reputational consequences with prospective and current customers, employees, suppliers, and others related to the activities of our paying and free customers, especially if such hostile, offensive, or inappropriate use is high profile.”

Cloudflare has also come under fire in recent months for allegedly supplying web protection services to sites that promote and support terrorism, including al-Shabaab and the Taliban, both of which are covered under U.S. Treasury sanctions.

In response, the company said it tries “to be neutral,” but wouldn’t comment specifically on the matter.