Scrapers sometimes fight back with software that deciphers captchas.

信息搜集公司有时用能破译验证码的软件予以还击。

youdao

Even so, researchers are already looking beyond text-based CAPTCHAs.

即便如此，研究人员已经把目光投向文本基础的验证码之后了。

youdao

You can find more sophisticated negative CAPTCHAs in Ned Batchelder's blog post.

在Ned Batchelder ' s blog post，你能找到更先进的negative CAPTCHAs文章。

youdao

In February, Web security firm Websense announced that CAPTCHAs at Google, Microsoft and Yahoo!

FORBES: Magazine Article

But in July, reports surfaced that the services' upgraded CAPTCHAs had also been defeated.

FORBES: Magazine Article

"There are some obstacles we need to overcome in duplicate detection and captchas, " he says.

FORBES: Social Media