# Towards understanding the security of modern image captchas and underground captcha-solving services

> Research article (Big Data Mining and Analytics, 2019) · cited 43× · AI/ML

**Wikidata**: [openalex:W2921673038](https://www.wikidata.org/wiki/openalex:W2921673038)  
**Source**: https://4ort.xyz/entity/towards-understanding-the-security-of-modern-image-captchas-and-underground-captcha-solving-services