Security can no longer be the gate at the end of the software delivery pipeline. The 2024 and 2025 data from IBM, Verizon, and Veracode tells a single, consistent story: organisations that embed security into the development lifecycle pay measurably less for breaches, detect threats faster, and ship more reliable code. As cloud adoption expands the threat surface and AI introduces new attack vectors, DevSecOps has shifted from competitive advantage to baseline expectation.
The cost of getting it wrong
The IBM Cost of a Data Breach Report 2025 places the global average cost of a data breach at $4.44 million — down 9% from $4.88 million in 2024, but with significant regional variation: the United States average rose to a record $10.22 million1. Healthcare breaches remained the most expensive at $7.42 million on average1.
The 2025 IBM report also reframes the conversation about what saves money. The single most impactful cost-reducing control identified in the 2025 data was a DevSecOps approach, which saved organisations an average of $227,000 per breach1. AI and machine learning security insights followed at $224,000 saved per breach, then security analytics and SIEM at $212,000, then encryption at $208,0001.
The threat landscape is widening, not narrowing
The Verizon 2025 Data Breach Investigations Report — the largest dataset of its kind, covering 22,000+ incidents and 12,195 confirmed breaches — found that vulnerability exploitation as an initial breach vector rose 34% year-on-year, now accounting for 20% of all breaches2. Stolen or compromised credentials remain the single most common entry vector at 22%2. Phishing accounts for 16% of breaches, with the median time for a user to fall for a phishing email under 60 seconds2.
The supply chain dimension is where the picture has worsened most dramatically. Verizon reports that third-party involvement in breaches doubled in 2025 to 30% of all incidents, up from 15% the previous year2. Supply chain compromises take longer to resolve than any other breach type — 267 days on average — and cost an average of $4.9 million per incident1.
Why bolt-on security keeps failing
Veracode's State of Software Security 2024 found that 63% of applications contain first-party code flaws and 70% have flaws inherited from third-party libraries3. The median time to remediate third-party software composition analysis (SCA) vulnerabilities is approximately 11 months3. Verizon's 2024 DBIR separately found that organisations take a median of 55 days to patch just 50% of their critical vulnerabilities after patches become available4.
This remediation gap is the operating space attackers depend on. When security is added at the end — through gate reviews, periodic scans, or post-deployment audits — vulnerabilities accumulate faster than they are addressed. The pipeline ships code; security tries to catch up; the gap grows.
DevSecOps inverts this. By integrating security checks into every phase of the software delivery lifecycle — from code commits through CI/CD pipelines to production monitoring — vulnerabilities are caught when they are cheapest to fix and the feedback loop runs in days rather than months.
What the data says about CI/CD and mature SDLC
The IBM 2025 data goes further than headline cost savings. The report finds that organisations with mature secure software development lifecycle (SDLC) practices detect breaches 74 days faster than those without1. Organisations using CI/CD pipelines with integrated security checks reduced breach likelihood by approximately 30%1.
The contrast with reactive security is stark. IBM reports that breaches resolved in under 200 days cost an average of $3.87 million, while those taking longer to resolve cost an average of $5.01 million1. Time-to-detection is therefore not a soft metric — it is the largest single financial lever in the breach-cost equation, and DevSecOps is the discipline that compresses it.
"DevSecOps was the single most impactful cost-reducing factor identified in IBM's 2025 Cost of a Data Breach analysis."
The cloud and AI dimensions
As more workloads move to the cloud, the threat surface changes shape. Multi-cloud breaches cost $5.05 million on average — meaningfully more than single-cloud breaches1. SentinelOne's research found that 83% of organisations experienced a cloud-related breach in the prior 18 months, with 23% of incidents attributed to misconfiguration5.
AI introduces a new layer of risk. IBM's 2025 report found that 13% of organisations had experienced breaches in AI models or applications, and 97% of those affected lacked appropriate access controls on their AI systems1. The same report found that organisations leveraging AI security and automation saved $1.9 million per breach compared with those that did not1 — making AI both a new risk vector and one of the most cost-effective defensive capabilities available.
What good DevSecOps looks like in practice
The data points to a clear set of practices that distinguish high-performing security organisations:
- Shift-left security testing. Static application security testing (SAST), software composition analysis (SCA), and secrets scanning integrated into developer IDEs and pre-commit hooks — catching vulnerabilities before they reach the main branch.
- Pipeline-embedded controls. Dynamic application security testing (DAST), container scanning, and infrastructure-as-code validation built into CI/CD as required gates.
- Runtime observability. Continuous monitoring, anomaly detection, and runtime application self-protection (RASP) catching what pre-deployment scans missed.
- Identity-first access control. Multi-factor authentication, least-privilege defaults, and just-in-time access — addressing the 22% of breaches starting with stolen credentials2.
- Supply chain hygiene. Software bill of materials (SBOM), dependency policy enforcement, and active monitoring of third-party libraries. Given that 30% of breaches now involve a third party2, this is no longer optional.
- Automated incident response. Pre-defined playbooks, automated containment actions, and orchestrated remediation — addressing the time-to-resolution gap directly.
The economic case is now decisive
For years, DevSecOps was framed as a quality and culture initiative — something organisations should pursue but struggled to justify in pure financial terms. The 2025 IBM data closes that argument:
- DevSecOps is the single most impactful cost-reducing control, saving $227,000 per breach1.
- Mature SDLC practices detect breaches 74 days faster1.
- CI/CD with integrated security reduces breach likelihood by approximately 30%1.
- AI and automation security, often deployed as part of DevSecOps, saves an additional $1.9 million per breach1.
The DevSecOps market is responding accordingly. Fortune Business Insights values the global DevSecOps market at $5.9 billion in 2024, with a projection to reach $24.2 billion by 2032 at a 19.4% CAGR6.
The bottom line
The 2025 data settles the long-running debate. Embedding security into the software development lifecycle is no longer a maturity goal or a nice-to-have. It is the single most cost-effective security control available to enterprises, and the gap between organisations that practise it and those that don't is widening.
As threat surfaces expand with cloud and AI adoption, the question is not whether to integrate security into your pipeline. The question is whether your organisation can absorb a multi-million-dollar incident before it does.