Facebook’s move followed questions about whether it has done enough to protect its site from bad actors. The company has been trying to clamp down on misinformation and false news after admitting last year that Russian agents had used it to spread divisive and polarizing messages.

The world of cryptocurrencies, which people have flooded into as prices soared in recent months, has also increasingly raised fears that parts of the market are dogged by scams. The Securities and Exchange Commission said Tuesday that it had halted what may have been a fraudulent initial coin offering that asked people to fund what was supposed to be the world’s first “decentralized bank.”

Rob Leathern, a Facebook product management director, announced the ban on cryptocurrency ads in a blog post. He said the ban was intentionally broad, as Facebook seeks to “better detect deceptive and misleading advertising practices.”

Mark Zuckerberg, Facebook’s chief executive, has recently expressed an interest in digital currencies. In a Facebook post this month, he wrote that he was studying how to introduce cryptocurrency to his company, adding that he thought it would “take power from centralized systems and put it back into people’s hands.”