Microsoft Exchange Server hack

GPTKB entity

Statements (28)
Predicate Object
gptkbp:instanceOf cybercrime
gptkbp:affects tens of thousands of organizations
gptkbp:alsoKnownAs Hafnium hack
gptkbp:category 2021 in computing
cyberattacks on computer systems
gptkbp:discoveredBy 2021
https://www.w3.org/2000/01/rdf-schema#label Microsoft Exchange Server hack
gptkbp:impact data theft
backdoor installation
gptkbp:notableVictim gptkb:government_agency
educational institutions
private companies
gptkbp:notified gptkb:Volexity
Dubex
gptkbp:patchedBy gptkb:Microsoft
gptkbp:perpetrator gptkb:Hafnium
Chinese state-sponsored group
gptkbp:releaseDate March 2021
gptkbp:response FBI removed web shells from infected servers
gptkbp:target gptkb:Microsoft_Exchange_Server
gptkbp:vulnerableTo gptkb:CVE-2021-26855
remote code execution
zero-day exploit
CVE-2021-26857
CVE-2021-26858
CVE-2021-27065
gptkbp:bfsParent gptkb:SolarWinds_hack
gptkbp:bfsLayer 7