Principles to secure your applications-duplicate-2

  • Never trust any input!
  • Validate input from all untrusted sources – use whitelists not blacklists
  • Plan for security from the start – it’s not something you can bolt on at the end
  • Keep it simple – complexity increases the likelihood of security holes
  • Keep your attack surface to a minimum
  • Make sure you fail securely
  • Use defence in depth
  • Adhere to the principle of least privilege
  • Use threat modelling
  • Compartmentalize – so your system is not all or nothing
  • Hiding secrets is hard – and secrets hidden in code won’t stay secret for long
  • Don’t write your own crypto
  • Using crypto doesn’t mean you’re secure (attackers will look for a weaker link)
  • Be aware of buffer overflows and how to protect against them

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