Name of the bug status may vary depends upon the tools (QC, JIRA etc) used and the process followed in the organization. Bug can be defined as the odd behavior of the software. Bug starts when defect is found and ends when a defect is closed, after confirming it is not reproduced. 1. New: - when a tester find a new defect status of the defect posted by the tester is New. The tester should provide a proper defect document to the development team to reproduce and fix the defect 2. Assign:- Defect which are in the status of “New” will be approved if valid and assigned to the development team by test lead or project lead or project manager; the status of bugs changes to assigned If the development team accepts the bug then the bug status changes and that status is “Open”