![]() With Sentry MBA, criminals buy an off-the-shelf, ready-to-go solution and pair it with a list of stolen credentials. Building a botnet, stealing credentials from another site, bypassing CAPTCHAs and other security mechanisms are all difficult tasks. Putting all these pieces together into a targeted attack against a particular organization is not a simple task for a would-be attacker. "Anyone who's using a CAPTCHA to try to keep automation at bay is not even introducing a significant road block," he said. ![]() But the attack traffic comes during regular business hours, domestic to the country where you do business in, from unwittingly compromised machines belonging to real users."įinally, to get around CAPTCHA challenges, attackers use optical character recognition.Īccording to Ghosemajumder, every single CAPTCHA-type system has been shown to be vulnerable to optical character recognition attacks for the past several years. "If they all came from a country where i don't even do business, that would be easy to defend. "If they were coming from the same computer, it would be very obvious to defend against," said Sumit Agarwal, Shape Security's co-founder and vice president of strategy.
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