Marcello Oliveira

Backend stories

Every story exists in English and in Portuguese. Most have a figure you can play with.

3 stories

  1. 7 min

    Prompt injection is our generation’s XSS

    There is no textContent for a model: what XSS and XSRF teach about prompt injection, and why the defense moves from input to privilege.

    InteractiveAIBackendFrontend

  2. 8 min

    0.1 + 0.2 and someone’s salary

    Why money is never a float: IEEE 754 bits, payroll drift and rate rounding, shown one payslip at a time.

    InteractiveBackendFundamentals

  3. 7 min

    Running code on other people’s sites

    One tracking pixel, three sites, and what it takes to run your code as a guest on someone else’s website.

    InteractiveFrontendBackend