License & Activation Security
The single most cracked surface of any commercial desktop software.
License logic gets cracked because it lives where the attacker lives — on their disk, in their debugger. We review activation, key validation, online checks, hardware fingerprinting, offline grace, anti-tamper, and the build pipeline that ships them. Born from a real-world cracked-license investigation; refined over multiple commercial plugin engagements.
Scope
What we test.
- Activation handshake — replay, downgrade, time-skew, MITM
- Hardware fingerprint generation and stability — too unique vs. too easy to spoof
- Online check posture — graceful degradation, offline grace, server outages
- Local license storage — at-rest protection, tamper detection, restore-from-backup abuse
- Code paths that gate features — branchless designs, redundant checks
- Anti-debug / anti-tamper layers and their actual cost-to-bypass
- Update path as a cracking vector
- Build pipeline — signing, secrets, public-vs-private symbols
Methodology
How we work.
Attacker workflow
We follow the exact tooling cracker forums use — debuggers, .NET decompilers, runtime instrumentation, patchers — and quantify the time-to-bypass for each layer.
Cost-to-bypass framing
There's no unbreakable license logic. The right framing is hours-to-bypass. We estimate it for each layer and tell you which ones are worth keeping.
Practical recommendations
We don't recommend obfuscation theater. We recommend the small handful of changes that actually buy you weeks instead of hours.
Deliverables
What you get.
- License threat model — every entry point, every bypass class
- Layer-by-layer cost-to-bypass estimate
- Concrete remediation: protocol changes, fingerprint refinements, anti-tamper additions
- Build pipeline & signing review
- Optional re-test pass after remediation, scoped separately
Timeline
Typical engagement.
Phase 01 · Week 0
Scoping
Installer, license server access (read-only), threat-actor tier.
Phase 02 · 2–3 weeks
Active review
Reverse engineering, dynamic analysis, server-side checks.
Phase 03 · 3–5 days
Reporting
Threat model + remediation roadmap.
Public references
We work against these.
Open standards we use as the floor for the engagement — not certifications we hold or issue. Findings are tied back to the relevant control IDs so your engineers can defend the remediation in technical reviews.
Our reports are technical hardening guides — not formal audit evidence. Compliance certificates are issued by your accredited auditor, not by us.
Ready to scope it?
The request form takes about three minutes. We respond within one business day.