He slid a worn, genuine W2 workbook from his own shelf. "This one is a loan. Return it clean. And remember: the word 'gratis' is never truly free."

Desperate, she confessed to Mr. Azevedo. He didn't yell. He sighed.

She knew it was wrong. The apostilas were copyrighted. But the search results shimmered with promise: a shady blog, a MediaFire link, a comment that read "Funcionando 100%!" (Working 100%!).

She lost her essay, her presentation, and three years of photos. But worse: the PDF vanished. And when she tried to re-download it, the link was dead.

"Where’s your apostila, Mariana?" he asked.

That night, her laptop screen flickered. A pop-up: "Your files have been encrypted. Pay 0.5 Bitcoin to unlock." Ransomware. From that same shady download.

Mariana never searched for pirated materials again. She passed the Cambridge exam—using borrowed, then bought, legitimate books. And years later, as a teacher herself, she told her students:

One night, drowning in irregular verbs, she typed into Google: