# A08 Data Integrity Failures > Skills for exploiting software and data integrity failures including HTTP request smuggling per OWASP A08:2021. Use when this capability is needed. - Skill: `tomevault-io/a08-data-integrity-failures` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/a08-data-integrity-failures` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/a08-data-integrity-failures/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Security - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/a08-data-integrity-failures --- # Software and Data Integrity Failures (OWASP A08) Violations of code and infrastructure integrity assumptions. ## Skills - [HTTP Request Smuggling](references/http-request-smuggling.md) - Request desync attacks ## Quick Reference | Technique | Frontend | Backend | |-----------|----------|---------| | CL.TE | Content-Length | Transfer-Encoding | | TE.CL | Transfer-Encoding | Content-Length | | TE.TE | Both with obfuscation | | --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/omkar-ukirde) — claim your Tome and manage your conversions.