Elon Musk's SpaceX has banned Zoom use over possible security issues with the wildly popular and increasingly ubiquitous video and conference call app.

In a memo to employees obtained by Reuters and posted on Wednesday, SpaceX officials said Zoom suffers from "significant privacy and security concerns" that make it an unsuitable choice for the space-focused company. SpaceX didn't offer an alternative to Zoom in the memo, according to Reuters.

"We understand that many of us were using this tool for conferences and meeting support," SpaceX told employees. "Please use email, text or phone as alternate means of communication."

It's the latest in a spate of bad news for Zoom, which has grown its market share considerably since the coronavirus outbreak started. With more people working at home, they need to easily communicate. In many cases, Zoom has proven to be the choice for businesses, consumers, and schools.

On Wednesday, however, security researcher Patrick Wardle said that he had discovered two security holes in Zoom that could allow hackers with local access to a user's machine to control the computer, as well as its microphone and webcam. 

Just days ago, the FBI said it was aware of people getting unauthorized access to Zoom meetings and wreaking havoc. It offered a host of guidelines for keeping video conference meetings safe.

That hasn't gone unnoticed at Zoom. CEO Eric Yuan said in a blog post on Wednesday that Zoom's daily free and paid user base was at 10 million at the end of 2019. It's now at 200 million. And he understands the importance of security as well as Zoom's failings in that area.

"We recognize that we have fallen short of the community's--and our own--privacy and security expectations," he said. "For that, I am deeply sorry, and I want to share what we are doing about it."

Yuan went on to explain that Zoom will stop adding new features temporarily to improve its security and will seek help from third-parties. A transparency report will help users see security problems and a revised bug bounty program will boost Zoom's ability to spot and squash security holes.

The question, of course, is whether that will be enough. With 200 million users, managing Zoom and improving security in such a short time won't be easy. And at least for now, even Yuan's comments aren't enough to allay fears at SpaceX.

Whether they should allay yours over the coming days remains to be seen. If Zoom can get its act together with security, then it might be a suitable solution. If not, many companies will consider moving on.