Causes Of Software Defects – ISTQB

Causes Of Software Defects


Humans make a mistake in the code. Development of a document specification.


A problem caused by an error.


A failure of the system or component caused by a defect.


Failures don’t only happen due to defects, but also environmental conditions, hardware problems, etc.

All defects start with a human error (for example a typo, misunderstanding, lack of planning, capability, etc.) The tester’s job is to expose the defect by causing a failure before the software gets to production.

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  • Rogerio da Silva

    Rogerio da Silva is a Brazilian who lives in the UK for a little over two decades. He is the owner of a test consulting and outsources services for software development. He likes to blog, write and create content that teaches others how to live a better life.  He loves reading biographies of successful authors and dream builders because they inspire him to keep creating!
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