Evidence from software security literature confirms that backdoors and malicious insertions can exist in software programs and firmware, posing real-world exploitation risks.
The claim asserts that backdoors in software programs exist and are exploited in real-world scenarios. Papers [6] and [9] explicitly discuss the existence and exploitation/risks of hidden firmware backdoors and backdoors in software development. No sources refute the existence or exploitation of backdoors. Therefore, the balance verdict is SUPPORTED.