I'd highly recommend ScienceSoft for various testing needs
Role: Delivery Leader at Guardian Technology Group
ScienceSoft team successfully performed Security and Penetration testing for Snad organization's public facing portals back in December, 2018 and gave us the confidence that the portal is ready to be launched with no serious vulnerabilities.
ScienceSoft has been highly professional throughout the process and helped us through all the steps of testing. ScienceSoft has high technological competencies to perform the needed testing as well as relevant domain experience.
Everything was delivered on time and on budget. I'd highly recommend ScienceSoft.