Application security testing tools: are your controls keeping up?

TL;DR: Application security testing still depends on SAST, DAST and SCA, but Arnica argues agentic development changes the timing problem because agents can create risky code faster than scan schedules, while applications remain the entry point in 68% of global enterprise breaches, according to the article. The control question is shifting from finding flaws later to governing what gets generated before it reaches the pipeline.

NHIMG editorial — based on content published by Arnica: Application Security Testing Tools: Complete Guide for CISOs (June 2026)

By the numbers:

• Applications are the most exploited entry point in 68% of global enterprise breaches.
• SCA scans dependencies across 70-90% of your codebase, reflecting how much application risk now sits in third-party libraries.

Questions worth separating out

Q: How should security teams govern application security across the SDLC?

A: They should treat the SDLC as a chain of trust, not a sequence of isolated review steps.

Q: Why do generated code and non-human identities complicate application security governance?

A: Because machine-generated changes can introduce code, credentials and configuration before a human review step has any effect.

Q: What breaks when teams rely on scan schedules instead of continuous security enforcement?

A: Anything created between scans can ship with unmanaged risk.

Practitioner guidance

• Map security controls to each testing layer Assign SAST to pre-merge code review, DAST to staging validation, SCA to dependency intake and IAST to test execution so each control has a clearly owned decision point.
• Push policy into agent configuration files If agents are generating code or pull requests, enforce managed security rules in their configuration so unsafe patterns are blocked before the pipeline sees them.
• Track secrets as lifecycle assets Treat tokens, API keys and certificates as governed identities with ownership, rotation and revocation, rather than as static artefacts to be discovered after commit.

What's in the full article

Arnica's full blog covers the operational detail this post intentionally leaves for the source:

• How its agentic rules are written into repository configuration before code reaches SAST or DAST
• The specific workflow behaviour it claims to change when security policy travels with the agent
• Examples of how the managed rule pack propagates across repositories and connected development environments
• The vendor's implementation framing for reducing downstream AppSec noise

👉 Read Arnica's guide to application security testing tools and agentic development →

Application security testing tools: are your controls keeping up?

Explore further

View Full Forum →  |  NHI Foundation Course →