Spam discrimination by generalized Ngram analysis of small header fields
US7555523B1 · kind B1 · utility
37Cited by
2References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 2004 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Jul 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the method of the present invention, spam is detected by extracting generalized Ngrams from a section of an e-mail (104). A spam manager (101) extracts (502) a sequence of characters from a section of an email. The spam manager (101) iterates (504) subsequences within the sequence. The spam manager (101) compares (506) subsequences to collections of spam-distinguishing subsequences to identify spam e-mail (104) messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.