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When Internet trolls attack: A view from the receiving end

One well-known science site recently turned off reader comments due to trolls and spambots. The host of CNET TV show Rumor Has It, who has dealt with her share of online abuse, ponders the move.

By September 26, 2013


CAPTCHA systems easy to foil, security firm finds

Imperva study finds CAPTCHAs, designed to keep spambots off Web sites, can easily be broken by humans and can turn people away if they are difficult or annoying to complete.

By June 18, 2012


Spam-bot tests flunk the blind

Advocates for the visually impaired contend that increasingly popular "visual verification" tests are discriminatory, raising a cloud over the future of a widely used antispam tool.

By July 2, 2003


Attack of Comcast's Internet zombies

CNET News.com's Declan McCullagh explains how spammers are hijacking Comcast's network to transform subscriber PCs into spambots.

By May 24, 2004