Top Security Measures for Effective Identity Verification Online

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The 5 Best Practices for Secure Identity Verification Credential theft increased by 160% in 2025, contributing to nearly 20% of data breaches as adversaries leveraged AI-powered techniques to bypass conventional safeguards.

1. Implement robust, resilient multi-factor authentication

Multi-factor authentication (MFA) remains a cornerstone of identity protection, reducing the likelihood of account compromise by requiring multiple verification factors. These include knowledge-based elements (e.g., passwords, PINs), possession-based factors (e.g., smartphones, hardware tokens), and inherence-based methods (e.g., biometrics). NIST guidelines emphasize that MFA achieves maximum effectiveness when combining distinct categories of factors. For instance, pairing a password with a hardware token or authenticator app provides stronger defense than relying on multiple knowledge-based elements like passwords and security questions.

However, MFA implementations vary in security strength

Weak configurations are susceptible to attacks such as prompt bombing and SIM swapping. To mitigate these risks, organizations should:

Discontinue reliance on legacy SMS-based one-time passcodes (OTPs), which are vulnerable to interception, phishing, and social engineering.
Adopt phishing-resistant MFA solutions, including FIDO2 security keys, passkeys, or certificate-based authentication.
Utilize authenticator apps that generate locally stored OTPs instead of push-based approval requests where feasible.

Secure Active Directory credentials with specialized tools to block billions of compromised passwords and enforce compliance.

2. Fortify service desks against social engineering threats

Service desks are frequent targets for social engineering attacks due to their role in managing identity and access requests. Attackers often impersonate employees to manipulate support staff into granting access, typically through password reset requests. These attacks are growing in sophistication, with threat actors using AI-generated deepfake audio and publicly accessible data to mimic legitimacy.

According to the report, high-profile breaches, such as those affecting Marks and Spencers (M&S) and Clorox, began with service desk compromises, leading to ransomware deployment or lateral movement. In the M&S incident, operations were halted for five days, resulting in daily losses of 3.8 million.

The primary issue lies not in the absence of security tools

Solutions like specialized service desk platforms integrate secure authentication into workflows, requiring users to validate their identity through trusted methods before executing sensitive actions like password resets or MFA changes. This reduces the risk of attackers exploiting human error during support requests. Advanced tools add layers such as government document verification and biometric liveness checks to further deter impersonation attempts.

3. Integrate device trust into identity verification processes

Modern identity verification must extend beyond credentials to account for device context. Attackers frequently steal session cookies and MFA tokens to bypass authentication, complicating efforts to distinguish legitimate users from compromised accounts.

Organizations are increasingly incorporating device trust

Evaluating factors such as:

Device management status (corporate-managed vs. unmanaged)
Operating system version and patch compliance
Presence of endpoint protection or EDR tools
Device-specific identifiers and cryptographic credentials
Browser reputation and session integrity
Indicators of compromise, malware, or jailbreaking

For example, a login from a trusted, compliant device on a corporate network may require minimal verification, while the same credentials used from an unmanaged device or suspicious IP range could trigger additional authentication steps or block access entirely.

4. Adopt passkeys for passwordless authentication

While MFA reduces credential-related risks, many organizations are moving toward passwordless authentication. Passkeys, built on FIDO2 and WebAuthn standards, use public-key cryptography to authenticate users without transmitting passwords. The private key remains securely stored on the user’s device, making passkeys resistant to phishing, credential theft, and password reuse.

They also reduce friction for users and IT teams

Eliminating the need to remember or rotate passwords. However, passkeys are not yet a complete replacement for passwords. Organizations still rely on passwords for fallback authentication during account recovery or device transitions. As a result, strong password policies and phishing-resistant MFA remain essential where passwords are in use.

5. Safeguard biometric data with privacy-preserving techniques

Biometric authentication methods such as fingerprint scans, facial recognition, and voice verification enhance security when implemented correctly. However, unlike passwords, biometric data cannot be reset if compromised, necessitating stringent protection measures.

Best practices include:

Avoiding storage of raw biometric data, instead using encrypted templates.
Performing local authentication on trusted devices whenever possible.
Leveraging privacy-preserving technologies like homomorphic encryption, which enables biometric matching without exposing underlying data.

These measures help mitigate both security and privacy risks associated with biometric systems.

Conclusion

As adversaries continue to target credentials and exploit authentication weaknesses, refining identity verification controls must remain a priority for security teams. Organizations should evaluate their current workflows and adopt modern solutions to address evolving threats.