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Large payload attack

As explained in Secure APIs

A large payload attack submits excessively large request data to consume resources or degrade service availability.

A large payload attack submits excessively large request data, consuming resources or degrading service availability. Unbound input strings can expose an API to this attack. section 1.1 section 6.0

For example, a product catalog that accepts unrestricted random keyword filters may allow attackers to send oversized inputs. Intentional flexible designs therefore need runtime defenses. section 6.0

Reduce exposure by:

  • Constraining user input instead of accepting unbounded strings. section 6.0
  • Validating incoming payloads and applying robust implementation patterns. section 1.1

How Secure APIs covers it

How deep it goes
Defines the attack and indicates runtime handling, but stops short of detailed implementation procedures.
Examples
Uses unrestricted product-catalog keyword filters and unbound input strings as examples of exposure.
What it assumes
Assumes basic familiarity with API inputs while introducing design, implementation, and infrastructure as security analysis axes.
What you can do after
Apply input constraints, payload validation, threat modeling, and runtime defenses to reduce large-payload exposure.
How it connects
Connects large payload attacks with API design, input validation, threat modeling, and denial-of-service attacks.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Secure APIs. The section links point to the parts of the book it draws on.