Most sites offering free license keys are bait for phishing or malware. Downloading a "crack" often infects your PC with the very viruses you are trying to prevent. Temporary Validity
Blocks malware that tries to lock your files. eset internet security trial key link
Trial keys are intended for one-time use per device. After 30 days, you will need to purchase a full license to remain protected. Most sites offering free license keys are bait