Many laser manufacturers (Cloudray, OMTech, Golden Laser) bundle EZCAD3 with their machines. If you bought a used laser and need a separate license:
In 2023, a Redditor reported: “Used a ‘verified’ EZCAD3 key from a Telegram bot. Two weeks later, my laser started marking random Chinese characters. Found out the crack had a remote backdoor.” ezcad3 license key verified