# Anti-spam and antivirus filter: what it is and how it works
> Anti-spam and antivirus filters analyse messages and files to detect unwanted communications or threats.
URL: https://www.zorraquino.com/en/dictionary/internet/antispam-antivirus-filter.html

# Anti-spam and antivirus filter

Anti-spam and antivirus filters analyse messages and files to detect unwanted communications or threats. They combine signals that may include content, reputation and behaviour

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

SPF, DKIM and DMARC provide checks on email authorisation, signatures and alignment; they do not prove that a person is who they claim to be or that a message is harmless. A protection system should account for classification errors, updates and ways to review incidents, without assuming that every message that passes a check is safe.

Also known as

spam filter, email filter

Topics

[Technology and data](https://www.zorraquino.com/en/dictionary/category/tecnologia-y-datos)

## Related concepts

- [Spam](https://www.zorraquino.com/en/dictionary/internet/spam.html)
- [Email deliverability](https://www.zorraquino.com/en/dictionary/digital-marketing/deliverability.html)
- [False negative](https://www.zorraquino.com/en/dictionary/digital-marketing/false-negative.html)