A message whose From address uses a domain other than its real origin is spoofed. This differs from impersonation, where the identity merely looks similar; anti-phishing policies handle each.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains Spoofing in context, with comparison tables and the common traps.
Terms in this definition
- Domain
A way of grouping workspaces by area of the business, in support of a data mesh approach. Items take on their workspace's domain, letting you filter the OneLake catalog by it, and certain tenant settings can be passed to domain admins; domains have no effect on access permissions.
- float
A
FLOATtakes up 4 bytes and has single precision. When exactness counts, convert it toDECIMAL, as totals and averages of it may otherwise make a materialized view refresh in full. - Origin
Host behind Front Door that serves the content, such as an App Service app, storage, a load balancer or any custom host given by FQDN. An App Service app counts as one origin regardless of its worker count.
- Impersonation
Fraudulent mail that mimics a genuine person or company's address or domain. Defender for Office 365 is what supplies the countermeasures: user protection, domain protection, mailbox intelligence and in-message safety tips.
- WHERE
Limits a SELECT, UPDATE or DELETE to just the rows meeting a condition. Omit it, and the statement hits every row.
- IDENTITY
A column property, written IDENTITY(seed, increment), that gives each new row the next number in a rising sequence. SCOPE_IDENTITY reports the latest value created in the current scope, and a rolled-back transaction still uses up the numbers it took.
Related terms
- EOP
Exchange Online Protection, the established name for the security built into every cloud mailbox in Exchange Online: filtering against malware, spam and spoofing. Defender for Office 365 adds to it.
- SPF
A DNS TXT record naming which sources may send email for a domain, so receiving servers can catch spoofing. DMARC and DKIM complement it.