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Small Business Security·Updated 2026-10-21

How do I check a software vendor’s security before signing a contract?

Short answer

Ask for evidence rather than promises: a recent SOC 2 report or ISO 27001 certificate, how they handle and where they store your data, whether they support SSO and MFA, how they notify customers of breaches, and what happens to your data when the contract ends.

The details

Match the depth of the review to the risk: a tool that holds customer data or connects to your systems deserves more scrutiny than a design app. Record the answers, and put breach notification and data deletion terms in the contract.

Terms explained

ISO/IEC 27001
ISO/IEC 27001 is the international standard for an information security management system (ISMS), against which organizations can be independently certified.
SOC 2
SOC 2 is an attestation report from an independent CPA firm on a service organization’s controls relevant to security, availability, processing integrity, confidentiality and privacy.
Multi-factor authentication
Multi-factor authentication (MFA) requires two or more kinds of proof to sign in, such as a password plus an app prompt, security key or biometric unlock of a passkey.

Sources

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