Input/Output (I/O) operations represent fertile ground for malicious exploitation. Carelessness could lead to severe consequences, including data breaches, loss of privacy, or complete takeover.
Adhering to best practices when designing Python I/O handlers mitigates numerous vulnerabilities, fortifying your app’s security perimeter.
This article explores vital security concerns related to I/O operations, explaining the following areas:
- Sanitizing user inputs
- Validating serialized data
- Restricting dangerous functions
- Applying least privilege principle
- Rotating logs wisely
Sanitizing User Inputs
Filter potentially harmful characters injected through user inputs using predefined functions available in Python Standard Library:
