He had learned a trick from a tech forum. Many pirates circumvented content filters by storing their actual download links inside plain text files ( .txt ) uploaded to file-hosting services. They then used (a URL shortener) to hide the final destination. The logic was: a .txt file looked harmless to antivirus and automated crawlers.
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If you were to locate a file matching this description, what would you actually find inside? Historically, these .txt files follow a specific format. You might see something like: He had learned a trick from a tech forum