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According to the hacker, he decided to search for vulnerable printers on Shodan, a search engine built specifically to find internet-connected devices. This search, to his amazement, turned up 800,000 results. Taking a sample of 50,000 printers from the list running on a specific port, what he did next was locate a tool that would allow him to connect with printers on that port and print. He found one such tool called PRET, and in the thread, he described his shock at discovering what PRET would allow him do.
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