If you want to add Captcha in admin login screen to make more secure your site.Then this extension is best for you.
its vQMod extension
INSTALLATION:
just need to upload "upload" directory. no file will be replaced
support and installation is free dyisolco@gmail.com
Admin Login Captcha
- Product Code: ISO
- Availability: In Stock
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$20
- Ex Tax: $20
- Price in reward points: 100