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"Symmetric Frame Cracking: A Powerful Dynamic Textual CAPTCHAs Cracking Policy."
Yueyao Chen et al. (2019)
- Yueyao Chen, Qianjun Liu, Tianyu Du, Yuan Chen, Shouling Ji:
Symmetric Frame Cracking: A Powerful Dynamic Textual CAPTCHAs Cracking Policy. Inscrypt 2019: 157-172
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