Secure Coding interview questions

1. A.writing past the bounds of a buffer, corrupting adjacent memory and potentially executing attacker code
2. B.verifying input conforms to expected type, length, format, and range before processing
3. C.escaping data for its destination context (HTML, JS, URL) so it is rendered as data, not code
4. D.reconstructing objects from untrusted serialized data, allowing tampering or remote code execution

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1. A.Fail securely
2. B.Secrets management
3. C.Input validation
4. D.Integer overflow

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1. A.Input validation — designing code so that errors default to a denied/safe state rather than granting access
2. B.Input validation — precompiled SQL template with placeholders that separates query structure from user data
3. C.Input validation — binding user input as parameters so the database treats it as data, never as SQL code
4. D.Input validation — verifying input conforms to expected type, length, format, and range before processing

Answer + AI explanation with Pro

1. A.normalizing input to a single standard form before validation to prevent encoding bypasses
2. B.reconstructing objects from untrusted serialized data, allowing tampering or remote code execution
3. C.escaping data for its destination context (HTML, JS, URL) so it is rendered as data, not code
4. D.storing credentials in a vault or secret store rather than hardcoding them in source code

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1. A.Integer overflow
2. B.Output encoding
3. C.Software Composition Analysis (SCA)
4. D.Allowlist validation

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1. A.Output encoding — writing past the bounds of a buffer, corrupting adjacent memory and potentially executing attacker code
2. B.Output encoding — storing credentials in a vault or secret store rather than hardcoding them in source code
3. C.Output encoding — scanning third-party and open-source dependencies for known vulnerabilities and license issues
4. D.Output encoding — escaping data for its destination context (HTML, JS, URL) so it is rendered as data, not code

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1. A.binding user input as parameters so the database treats it as data, never as SQL code
2. B.accepting only known-good input values and rejecting everything else (preferred over denylisting)
3. C.escaping data for its destination context (HTML, JS, URL) so it is rendered as data, not code
4. D.time-of-check to time-of-use flaw where state changes between validation and use of a resource

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1. A.Software Composition Analysis (SCA)
2. B.Integer overflow
3. C.Insecure deserialization
4. D.Parameterized queries

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1. A.Parameterized queries — a formal inventory of all components and dependencies in a piece of software
2. B.Parameterized queries — arithmetic result exceeding a type's max value, wrapping around to cause incorrect or unsafe behavior
3. C.Parameterized queries — designing code so that errors default to a denied/safe state rather than granting access
4. D.Parameterized queries — binding user input as parameters so the database treats it as data, never as SQL code

Answer + AI explanation with Pro

1. A.writing past the bounds of a buffer, corrupting adjacent memory and potentially executing attacker code
2. B.accepting only known-good input values and rejecting everything else (preferred over denylisting)
3. C.arithmetic result exceeding a type's max value, wrapping around to cause incorrect or unsafe behavior
4. D.scanning third-party and open-source dependencies for known vulnerabilities and license issues

Answer + AI explanation with Pro

1. A.Insecure deserialization
2. B.Output encoding
3. C.Parameterized queries
4. D.Allowlist validation

Answer + AI explanation with Pro

1. A.Allowlist validation — writing past the bounds of a buffer, corrupting adjacent memory and potentially executing attacker code
2. B.Allowlist validation — accepting only known-good input values and rejecting everything else (preferred over denylisting)
3. C.Allowlist validation — scanning third-party and open-source dependencies for known vulnerabilities and license issues
4. D.Allowlist validation — reconstructing objects from untrusted serialized data, allowing tampering or remote code execution

Answer + AI explanation with Pro

1. A.designing code so that errors default to a denied/safe state rather than granting access
2. B.escaping data for its destination context (HTML, JS, URL) so it is rendered as data, not code
3. C.verifying input conforms to expected type, length, format, and range before processing
4. D.binding user input as parameters so the database treats it as data, never as SQL code

Answer + AI explanation with Pro

1. A.Insecure deserialization
2. B.Dynamic Application Security Testing (DAST)
3. C.Software Composition Analysis (SCA)
4. D.Fail securely

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1. A.Fail securely — storing credentials in a vault or secret store rather than hardcoding them in source code
2. B.Fail securely — analyzing source code or binaries for vulnerabilities without executing the program
3. C.Fail securely — designing code so that errors default to a denied/safe state rather than granting access
4. D.Fail securely — a formal inventory of all components and dependencies in a piece of software

Answer + AI explanation with Pro

1. A.storing credentials in a vault or secret store rather than hardcoding them in source code
2. B.precompiled SQL template with placeholders that separates query structure from user data
3. C.verifying input conforms to expected type, length, format, and range before processing
4. D.accepting only known-good input values and rejecting everything else (preferred over denylisting)

Answer + AI explanation with Pro

1. A.Input validation
2. B.Fail securely
3. C.Dynamic Application Security Testing (DAST)
4. D.Secrets management

Answer + AI explanation with Pro

1. A.Secrets management — arithmetic result exceeding a type's max value, wrapping around to cause incorrect or unsafe behavior
2. B.Secrets management — verifying input conforms to expected type, length, format, and range before processing
3. C.Secrets management — scanning third-party and open-source dependencies for known vulnerabilities and license issues
4. D.Secrets management — storing credentials in a vault or secret store rather than hardcoding them in source code

Answer + AI explanation with Pro

1. A.scanning third-party and open-source dependencies for known vulnerabilities and license issues
2. B.verifying input conforms to expected type, length, format, and range before processing
3. C.reconstructing objects from untrusted serialized data, allowing tampering or remote code execution
4. D.a formal inventory of all components and dependencies in a piece of software

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1. A.Input validation
2. B.Buffer overflow
3. C.Dynamic Application Security Testing (DAST)
4. D.Insecure deserialization

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1. A.Insecure deserialization — a formal inventory of all components and dependencies in a piece of software
2. B.Insecure deserialization — precompiled SQL template with placeholders that separates query structure from user data
3. C.Insecure deserialization — analyzing source code or binaries for vulnerabilities without executing the program
4. D.Insecure deserialization — reconstructing objects from untrusted serialized data, allowing tampering or remote code execution

Answer + AI explanation with Pro

1. A.precompiled SQL template with placeholders that separates query structure from user data
2. B.arithmetic result exceeding a type's max value, wrapping around to cause incorrect or unsafe behavior
3. C.designing code so that errors default to a denied/safe state rather than granting access
4. D.time-of-check to time-of-use flaw where state changes between validation and use of a resource

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1. A.Prepared statement
2. B.Static Application Security Testing (SAST)
3. C.Software Bill of Materials (SBOM)
4. D.Input validation

Answer + AI explanation with Pro

1. A.Prepared statement — precompiled SQL template with placeholders that separates query structure from user data
2. B.Prepared statement — analyzing source code or binaries for vulnerabilities without executing the program
3. C.Prepared statement — normalizing input to a single standard form before validation to prevent encoding bypasses
4. D.Prepared statement — binding user input as parameters so the database treats it as data, never as SQL code

Answer + AI explanation with Pro

1. A.normalizing input to a single standard form before validation to prevent encoding bypasses
2. B.accepting only known-good input values and rejecting everything else (preferred over denylisting)
3. C.storing credentials in a vault or secret store rather than hardcoding them in source code
4. D.a formal inventory of all components and dependencies in a piece of software

Answer + AI explanation with Pro

1. A.Integer overflow
2. B.Prepared statement
3. C.Insecure deserialization
4. D.Canonicalization

Answer + AI explanation with Pro

1. A.Canonicalization — time-of-check to time-of-use flaw where state changes between validation and use of a resource
2. B.Canonicalization — precompiled SQL template with placeholders that separates query structure from user data
3. C.Canonicalization — binding user input as parameters so the database treats it as data, never as SQL code
4. D.Canonicalization — normalizing input to a single standard form before validation to prevent encoding bypasses

Answer + AI explanation with Pro

1. A.precompiled SQL template with placeholders that separates query structure from user data
2. B.a formal inventory of all components and dependencies in a piece of software
3. C.arithmetic result exceeding a type's max value, wrapping around to cause incorrect or unsafe behavior
4. D.analyzing source code or binaries for vulnerabilities without executing the program

Answer + AI explanation with Pro

1. A.Static Application Security Testing (SAST)
2. B.Prepared statement
3. C.Output encoding
4. D.Integer overflow

Answer + AI explanation with Pro

1. A.Integer overflow — writing past the bounds of a buffer, corrupting adjacent memory and potentially executing attacker code
2. B.Integer overflow — arithmetic result exceeding a type's max value, wrapping around to cause incorrect or unsafe behavior
3. C.Integer overflow — reconstructing objects from untrusted serialized data, allowing tampering or remote code execution
4. D.Integer overflow — storing credentials in a vault or secret store rather than hardcoding them in source code

Answer + AI explanation with Pro