SMART CONTRACT AUDITS · HEAD TO HEAD

Halborn Security vs Sparrow & Co.

Q: Halborn Security or Sparrow & Co.?

Both are vetted Smart Contract Audits providers on Onyx. Halborn Security rates 4.9 out of 5 across 142 reviews, Sparrow & Co. rates 4.8 across 18. Match the specialties to your need.

Q: Are both providers vetted by Onyx?

Yes. Both passed Onyx provider vetting. Listing reflects vetting, not payment, and a commission is earned only on a closed engagement.

Side by side

Rating

4.9/5

4.8/5

Reviews

142

18

Response time

< 24h

Lead time

4–8 weeks

2–3 weeks

Team size

64

3

Past mandates

348

38

Vetted since

Feb 14, 2024

Apr 22, 2025

Halborn Security specialties

SoliditySolana programsDeFi primitivesSmart contract architecture

Sparrow & Co. specialties

SolidityDEXDeFi primitivesNFT

FAQ

Halborn Security or Sparrow & Co.?

Both are vetted Smart Contract Audits providers on Onyx. Halborn Security rates 4.9 out of 5 across 142 reviews, Sparrow & Co. rates 4.8 across 18. Match the specialties to your need.

Are both providers vetted by Onyx?

Yes. Both passed Onyx provider vetting. Listing reflects vetting, not payment, and a commission is earned only on a closed engagement.