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Michal Tarnacki

PROFILE

Michal Tarnacki

Contributed to the microsoft/MigTD and intel/MigTD repositories by engineering secure migration and attestation features for confidential virtualization. Focused on Rust and C, the work included implementing GHCI 1.5–compliant rebinding, TDINFO integration, and robust policy verification to ensure migration integrity and compliance. Enhanced security through memory region validation, cryptographic key zeroization, and build-time fences to prevent insecure release artifacts. Improved reliability by expanding unit and fuzz testing coverage, stabilizing feature-flagged builds, and addressing vulnerabilities identified in security audits. Applied expertise in backend development, systems programming, and security engineering to deliver hardened, specification-compliant solutions for virtualization and attestation workflows.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

30Total
Bugs
8
Commits
30
Features
8
Lines of code
3,190
Activity Months4

Work History

July 2026

9 Commits

Jul 1, 2026

July 2026 monthly summary for intel/MigTD focused on restoring policy integrity and applying cross-cutting security hardening across the virtualization stack to improve reliability, security posture, and business value.

June 2026

4 Commits • 1 Features

Jun 1, 2026

June 2026 monthly summary for intel/MigTD: Security hardening and reliability improvements focused on preventing data leakage, hardening release artifacts, and reducing attack surface during migrations. The work emphasizes careful memory-region validation, secure migration data handling, release-build fences, and code hygiene.

May 2026

9 Commits • 4 Features

May 1, 2026

May 2026 Monthly Summary: Microsoft/MigTD and Intel/MigTD contributions focusing on secure migrations, attestation, TD_INFO compliance, and fuzzing coverage. Key progress includes VMM-driven initMigtdData support, policy-driven startup checks and migration flow verification, SERVTD_ATTR verification to prevent unauthorized writes, TD_INFO inclusion in image layout, rebinding attestation simplifications, and stabilized fuzzing coverage pipelines. Business value: stronger migration integrity, reduced risk of policy/attestation misconfigurations, more reliable release artifacts, and improved test confidence in security-critical components.

April 2026

8 Commits • 3 Features

Apr 1, 2026

April 2026 performance summary for MigTD initiatives across microsoft/MigTD and intel/MigTD. Delivered a GHCI 1.5–compliant rebinding and TDINFO integration, stabilized builds under feature flags, enhanced migration attestation with SERVTD_ATTR/EXT, and improved panic observability with FatalError TdVmcall. Expanded unit test coverage for InitData, RebindingInfo, and attestation components; demonstrated strong Rust/SPDM/TDINFO technical skill and cross-repo collaboration.

Activity

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Quality Metrics

Correctness97.4%
Maintainability86.0%
Architecture90.0%
Performance81.4%
AI Usage62.6%

Skills & Technologies

Programming Languages

CRustShell

Technical Skills

API integrationBackend DevelopmentCI/CDCryptographyFFIFeature Flag ManagementInput ValidationMemory ManagementNetwork ProgrammingPCIPCIeRustRust programmingSecurity EngineeringSecurity Hardening

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

intel/MigTD

Apr 2026 Jul 2026
4 Months active

Languages Used

CRustShell

Technical Skills

API integrationRustRust programmingasynchronous programmingattestation systemsbackend development

microsoft/MigTD

Apr 2026 May 2026
2 Months active

Languages Used

RustShell

Technical Skills

Feature Flag ManagementRustUnit TestingRust programmingbackend developmentfuzz testing