To evade detection, hackers are requiring targets to complete CAPTCHAs

To evade detection, hackers are requiring targets to complete CAPTCHAs

Microsoft Security Intelligence CAPTCHAs, those puzzles with muffled sounds or blurred or squiggly letters that websites use to filter out bots (often unsuccessfully), have been annoying end users for more than a decade. Now, the challenge-and-response tests are likely to vex targets in malware attacks. Microsoft recently spotted an attack group distributing a malicious Excel …

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