A "crack" is a piece of software that has been illegally modified to remove or bypass copy protection features such as licensing checks, activation keys, or digital rights management (DRM) measures. These modified versions allow users to run the software without purchasing a legitimate license.

: The software allows users to create professional-looking invoices quickly and easily. With a range of customizable templates, businesses can personalize their invoices to match their brand.

If a crack introduces a data-harvesting script, your clients’ data will be leaked or sold on the dark web.