The hack will probably stand out as one of the top cybersecurity events of the year, because Exchange is still widely used around the world. It could lead companies to spend more on security software to prevent future hacks, and to move to cloud-based email instead of running their own email servers in-house.
IT departments are working on applying the patches, but that takes time and the vulnerability is still widespread. On Monday, internet security company Netcraft said it had run an analysis over the weekend and observed over 99,000 servers online running unpatched Outlook Web Access software.
Shares of Microsoft stock have fallen 1.3% since March 1, the day before the company disclosed the issues, while the S&P 500 index is down