# A machine learning attack against variable-length Chinese character CAPTCHAs

> Research article (Applied Intelligence, 2018) · cited 19× · AI/ML

**Wikidata**: [openalex:W2901418702](https://www.wikidata.org/wiki/openalex:W2901418702)  
**Source**: https://4ort.xyz/entity/a-machine-learning-attack-against-variable-length-chinese-character-captchas