In the piracy subculture, a "repack" signifies a second attempt. Usually, a "scene group" (a team of crackers) releases a crack or keygen. If that initial release is found to be buggy, or worse, if it is flagged by antivirus software (falsely or correctly) as malware, another group—or sometimes the same one—may release a "repack." They essentially repackage the software, tweaking the code to evade detection or fix the errors.