For years, Adobe maintained a static blocklist. Today, the CS6 validation system has been retrofitted to behave more like Creative Cloud in one specific way:
Adobe once offered a web-based deactivation tool, but it has been deprecated. Here is the current method: adobe indesign cs6 serial number validation
By following these recommendations, users can ensure that they use Adobe InDesign CS6 legitimately and securely, avoiding any consequences associated with pirated software. For years, Adobe maintained a static blocklist
pings Adobe's servers to verify the serial number's authenticity and check the activation count. Adobe Help Center Fix invalid or revoked serial numbers - Adobe Help Center Adobe maintained a static blocklist. Today
Here’s the part Adobe doesn’t advertise: CS6’s serial validation was within weeks of release.