Which of the following is NOT typically a method for defending against injection techniques?

The correct response highlights the approach of uploading files without validation as it directly undermines security practices. File uploads can be a significant point of vulnerability, as they can potentially allow an attacker to execute malicious code on the server or platform if not properly validated. Validation methods are critical because they ensure that only acceptable and safe files are uploaded.

In contrast, effective defense strategies against injection techniques frequently include input validation, which helps mitigate risks by ensuring that only properly formatted data is accepted. Patching software is crucial for addressing vulnerabilities that could be exploited through injection methods. Firewalls also play an essential role in filtering and monitoring incoming and outgoing network traffic, helping to block potentially harmful requests. Therefore, uploading files without any validation stands out as a method that does not contribute to defense against injection attacks, making it the correct answer.