# 2021 Microsoft Exchange Server data breach

> series of cyberattacks exploiting Microsoft's email and calendar server software

**Wikidata**: [Q105820537](https://www.wikidata.org/wiki/Q105820537)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/2021_Microsoft_Exchange_Server_data_breach)  
**Source**: https://4ort.xyz/entity/2021-microsoft-exchange-server-data-breach


## References

1. [New nation-state cyberattacks. 2021](https://blogs.microsoft.com/on-the-issues/2021/03/02/new-nation-state-cyberattacks/)
2. BBC Things