New research from Barracuda Networks has revealed that cyber-criminals are increasingly using official reCAPTCHA walls to disguise malicious content from email security systems and trick unsuspecting users. reCAPTCHA walls are typically used to verify human users before allowing access to web content, thus sophisticated scammers are beginning to use the Google-owned service to prevent automated URL analysis systems from accessing the actual content of phishing pages, and to make phishing sites more believable in the eyes of the victim, Barracuda Networks warned.

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