What Are Proxy Candidates in Interviews? Risks, Signs & Prevention

Remote hiring has made it possible for companies to interview candidates from almost anywhere in the world. But as hiring becomes more digital, organizations face a growing challenge: how do you know the person attending the interview is actually the person who applied for the job?

One form of interview fraud is the use of proxy candidates. A proxy candidate is a person who participates in an interview or assessment on behalf of another candidate. Instead of evaluating the applicant's actual skills and experience, the hiring team may unknowingly evaluate someone else's knowledge, communication ability, or technical expertise.

This is part of a broader interview-fraud problem. According to a Gartner survey, 6% of job candidates admitted to participating in interview fraud, including posing as someone else or having someone else pose as them. Gartner has also predicted that one in four candidate profiles could be fake by 2028, highlighting the growing importance of candidate authenticity in digital hiring.

For recruiters, this means interview integrity can no longer be treated as a minor operational issue. A fraudulent candidate can lead to a poor hire, increased recruitment costs, productivity problems, and, in technical or sensitive roles, potential security and data risks.

What Is a Proxy Candidate?

A proxy candidate is an individual who participates in an interview or assessment on behalf of the actual job applicant.

For example, suppose Candidate A applies for a software engineering position but does not have the technical expertise required for the role. Candidate B, who has stronger technical skills, attends the interview instead and answers the interviewer's questions while pretending to be Candidate A.

The interviewer may then believe that Candidate A has demonstrated the required skills and recommend them for the position.

This practice is commonly referred to as a proxy interview or candidate impersonation.

Proxy participation can occur during:

• Initial screening interviews

• Technical interviews

• Coding rounds

• Behavioral interviews

• Online assessments

• Managerial interviews

• Final interview rounds

In some cases, another person completely replaces the candidate. In others, the candidate remains on camera while another person secretly provides answers through a second device, messaging application, hidden audio, or another communication channel.

In both cases, the core problem is the same: the hiring team is not independently evaluating the actual candidate.

What Is a Proxy Interview?

A proxy interview occurs when someone other than the actual applicant participates in the interview on the applicant's behalf. In some cases, the actual candidate may remain present but receive substantial assistance from another person during the interview. These behaviors may suggest that candidates are receiving external assistance or communicating with another person during the interview. While this is not a traditional proxy interview, it is another form of interview fraud that can undermine the accuracy of the hiring decision. According to BarRaiser, common red flags for proxy interviews include delayed responses, unusually long pauses, inconsistent explanations, and difficulty answering detailed follow-up questions.

There are several ways this can happen.

1. A Stand-In Candidate

This is the most straightforward form of proxy interviewing.

Another individual attends the interview and introduces themselves as the applicant. The proxy may study the candidate's resume, LinkedIn profile, previous projects, and job description before the interview.

The more experienced proxy then handles the interview while the actual candidate remains absent.

2. Hidden Human Assistance

The candidate may appear on camera, but another person helps them answer questions from outside the camera frame.

For example, a helper could:

• Listen to the interview through another device

• Send answers through chat

• Provide technical solutions

• Give verbal instructions through an earpiece

• Help solve coding or system-design questions

In this situation, the candidate technically appears in the interview, but the performance being evaluated is not entirely their own.

3. Interview Swapping

Another variation occurs when different people participate at different stages of the hiring process.

For example, one person may clear the technical interview while another person later joins the organization.

This makes identity continuity across multiple hiring stages particularly important.

4. Proxy Interviews Combined With AI

Proxy interviews can also be combined with AI tools.

A candidate may use another person for some parts of the interview and AI-generated responses for others. They may also use real-time AI assistance while remaining visible on camera.

This creates a broader category that includes proxy candidates, AI interview assistants, deepfakes, identity manipulation, and other forms of unauthorized assistance. According to Phenom, citing Checkr, identity fraud moved into the top five hiring priorities for CHROs between 2025 and 2026.

Learn more about How Sherlock AI Prevents Proxy Interviews

Proxy Candidate vs. AI-Assisted Candidate vs. Deepfake Candidate

Why Are Proxy Candidates Becoming a Bigger Hiring Risk?

Remote hiring has removed many of the natural identity checks that occur during face-to-face recruitment.

When interviews take place entirely online, recruiters may never physically meet the candidate before an offer is made. Candidates can participate from different locations, use different devices, and communicate through a wide range of digital tools.

At the same time, AI has made interview assistance easier. Modern interview fraud can involve proxy candidates, AI interview assistants, deepfake videos, voice manipulation, and real-time answer generation. These techniques are part of the broader landscape of AI interview fraud.

For a company conducting thousands of interviews, even a small percentage can translate into a meaningful number of fraudulent interview attempts.

1. Skills Mismatch

The most immediate risk is hiring someone who cannot perform at the level demonstrated during the interview.

A proxy candidate may answer technical, behavioral, or role-specific questions on behalf of the actual applicant. As a result, the interview performance may create a false impression of the candidate's knowledge and capabilities.

For example, a candidate may appear capable of solving complex coding problems because a proxy answered the questions during the technical interview. Once hired, the employee may struggle with tasks that should have been routine for the role.

This creates a gap between interview performance and actual job performance, making it difficult for the organization to rely on its hiring assessment.

2. Increased Hiring Costs

A fraudulent hire can be expensive.

Organizations may spend resources on recruiting, interviewing, background verification, onboarding, training, equipment, and managerial time before discovering that the employee does not have the capabilities demonstrated during the interview.

For example, a company may spend several weeks hiring a senior software developer, including multiple technical interviews and an extensive onboarding process. If the candidate later fails to perform at the expected level because someone else completed the interview, the company may have to spend additional resources finding and training a replacement.

This increases the overall cost of hiring and can force the organization to repeat a recruitment process that it believed had already been completed successfully.

3. Productivity Loss

When an employee does not have the skills they demonstrated during interviews, other team members may have to compensate.

The new employee may require more supervision, additional training, or continuous assistance from experienced colleagues. This can affect the productivity of the entire team rather than just the individual employee.

For example, a company may hire a developer who appeared capable of independently managing complex projects during the interview. After joining, the employee may require senior developers to review basic work, resolve errors, and provide regular guidance.

This can lead to missed deadlines, increased workloads, delayed projects, and reduced team productivity.

4. Security Risks

The security implications can be particularly serious for technical and high-access roles.

A candidate who successfully passes an interview may eventually receive access to sensitive company resources such as source code, internal applications, cloud infrastructure, customer information, financial systems, proprietary technology, and internal documentation.

For example, a company may hire a senior engineer after a proxy candidate demonstrates advanced knowledge during the interview. Once hired, the employee receives access to the organization's code repositories and cloud infrastructure. If the person hired is not the individual who actually demonstrated those skills during the interview, the company may have unknowingly introduced an additional security risk.

This is why interview fraud can become an enterprise security concern, not just an HR problem.

5. Damage to Hiring Integrity

Hiring depends on trust.

Recruiters need to trust that candidates are accurately representing their identities, qualifications, experience, and abilities throughout the recruitment process. Proxy interviews can undermine that trust by making it difficult to determine whether the person being evaluated is actually the person who applied.

For example, if a company regularly conducts remote interviews and discovers that candidates have been using proxy participants, recruiters may need to introduce additional identity checks and verification procedures for future applicants. This can make the hiring process longer and more complicated for both recruiters and genuine candidates.

This can ultimately damage the integrity and reliability of the entire recruitment process, particularly for organizations that depend heavily on remote interviews and high-volume technical hiring.

How Can Recruiters Identify Proxy Candidates?

There is no single behavior that proves someone is a proxy candidate.

A candidate may pause because they are nervous. Their camera may malfunction. Their voice may sound different because they are using another microphone. They may look away from the screen while thinking.

Therefore, recruiters should not make a fraud decision based on one isolated anomaly.

Instead, the stronger approach is to evaluate multiple signals together.

1. Check Identity Across Interview Stages

One of the most important controls is maintaining identity continuity.

Organizations can compare identity signals across:

• Application

• Candidate profile

• Initial screening

• Technical interview

• Assessment

• Final interview

• Offer stage

• Onboarding

If different people appear at different stages without a legitimate explanation, the organization should investigate further. Maintaining identity continuity across the hiring process makes it harder for candidates to use a proxy at one stage and appear themselves at another.

2. Ask Detailed Questions About the Resume

A proxy may know what is written on a candidate's resume but may not know the experiences behind it. According to GetReal Security, 41% of organizations have unknowingly hired a fraudulent candidate.

Recruiters can ask candidates to explain:

• Why they selected a particular approach

• What challenges they encountered

• What decisions they personally made

• What went wrong in a project

• How they measured success

• What they would do differently today

Candidates with genuine experience should generally be able to explain the reasoning, decisions, and context behind their work.

3. Ask Unexpected Follow-Up Questions

Predictable questions are easier to prepare for.

Unexpected follow-up questions can help recruiters understand whether the candidate genuinely understands the subject.

For example, instead of asking only:

"Tell me about your previous project."

An interviewer can ask:

• "What was the most difficult technical decision you made?"

• "What would break if you changed that architecture?"

• "Why did you choose that approach over the alternative?"

• "What was one mistake you made during the project?"

• "How would you redesign it today?"

These questions require the candidate to reason from personal experience rather than repeat prepared answers.

4. Compare Interview Performance With the Resume

Recruiters can compare what candidates claim on their resume with how they perform during the interview and assessment.

For example, a candidate may claim extensive experience with a technology but struggle to explain basic implementation decisions.

Recruiters can look for:

• Gaps between claimed and demonstrated skills

• Inconsistent project details

• Difficulty explaining personal contributions

• Weak understanding of technologies listed on the resume

• Differences between interview and assessment performance

One inconsistency is not necessarily suspicious. However, repeated inconsistencies across multiple stages can justify additional verification.

5. Look for Unusual Response Timing

Proxy candidates or candidates receiving external assistance may sometimes demonstrate unusual response patterns.

For example:

• Long pauses before answering simple questions

• Responses that appear delayed

• Highly polished answers followed by weak follow-ups

• Answers that do not directly address the question

• Sudden changes in response quality

However, response timing should always be considered alongside other signals.

A pause is not proof of cheating.

6. Watch for Changes in Voice or Appearance

Significant or unexplained changes between interview rounds can warrant additional verification.

Recruiters may notice differences in:

• Facial appearance

• Voice characteristics

• Speech patterns

• Lighting

• Camera quality

• Background

• Communication style

However, legitimate explanations are common. Candidates may use different devices, microphones, locations, or internet connections.

The important factor is whether several inconsistencies appear together.

7. Look for Suspicious Device or Environmental Activity

Proxy fraud can involve more than the person visible on the webcam.

Candidates may use:

• Multiple devices

• Hidden audio

• Messaging applications

• Remote connections

• Additional screens

• External collaborators

• AI assistants

Some forms of external assistance may not be visible to the interviewer during a standard video call.

That is why modern interview integrity systems increasingly analyze device, environmental, behavioral, and identity signals rather than relying exclusively on the webcam.

How Can Companies Prevent Proxy Interviews?

Detection is important, but preventing proxy participation before it affects the hiring decision is even better.

1. Verify Candidate Identity

Organizations should establish an appropriate identity-verification process for roles where candidate fraud presents a meaningful risk.

Depending on the role, geography, and applicable requirements, this can include:

• Government-issued ID verification

• Live selfie verification

• Liveness checks

• Biometric verification

• Candidate identity matching

The goal is to establish that the person participating in the interview is the person associated with the application.

2. Use Continuous Verification

Identity verification should not necessarily happen only once.

Organizations can introduce verification at important stages such as:

• Initial screening

• Technical assessment

• Final interview

• Offer stage

• Onboarding

This makes it harder for a candidate to pass one stage and then use a proxy during another.

3. Use Live Skill Assessments

Identity verification tells you who the candidate is.

Skill assessments tell you what the candidate can actually do.

Organizations can use:

• Live coding

• Debugging exercises

• System-design discussions

• Case studies

• Role-specific scenarios

• Live problem-solving

The objective is to evaluate genuine capability instead of relying only on resume claims.

4. Train Interviewers

Recruiters and hiring managers should understand the different types of interview fraud.

Training should help interviewers recognize patterns involving:

• Candidate identity

• Behavioral inconsistencies

• External assistance

• AI-generated answers

• Deepfake manipulation

• Proxy participation

At the same time, interviewers should understand that individual anomalies are not automatically evidence of fraud.

5. Create an Escalation Process

Hiring teams should have a documented process for handling suspicious interviews.

For example:

1. Record the relevant signals.

2. Avoid making an immediate accusation.

3. Request additional verification when appropriate.

4. Escalate the case to the relevant recruiting or security team.

5. Review multiple sources of evidence.

6. Document the final decision.

This helps make candidate-fraud investigations more consistent and less subjective.

Read more about 15 Ways to Prevent Proxy Interviews Remotely

How Sherlock AI Helps To Detect Proxy Candidates?

Identifying proxy candidates manually can be difficult, particularly when another person is helping the candidate without appearing on camera. Traditional interview monitoring often focuses on what the recruiter can see and hear, while modern interview fraud can involve hidden devices, external collaborators, AI assistants, identity manipulation, or different people participating across interview stages.

1. Continuous Identity Verification

A candidate may pass an initial identity check and then attempt to replace themselves later. Sherlock AI uses continuous identity verification to help organizations assess whether the same candidate remains present throughout the interview.

This can help surface:

• Candidate swaps

• Identity inconsistencies

• Proxy participation

• Candidate impersonation

• Changes between interview stages

The benefit is that identity becomes an ongoing part of interview integrity rather than a one-time checkpoint.

2. Behavioral and Interview Signal Analysis

Proxy candidates may behave differently from the actual applicant.

They may have different:

• Response patterns

• Communication styles

• Engagement levels

• Interaction behavior

• Answer timing

Sherlock AI analyzes behavioral signals as part of a broader pattern rather than treating one unusual behavior as proof of fraud.

This is important because legitimate candidates can also behave differently depending on stress, internet quality, environment, or interview difficulty.

The objective is to give recruiters additional evidence, not replace human judgment.

3. Detecting External and AI-Assisted Interview Fraud

A candidate may remain visible on camera while receiving assistance through another person, device, messaging application, or AI tool.

Sherlock AI is designed to analyze device, environmental, behavioral, and interview signals that can help surface suspicious activity that may not be obvious from the webcam alone. Its broader approach to candidate fraud detection can help identify patterns associated with:

• Hidden human assistance

• External answer generation

• AI-assisted responses

• Multiple devices

• Off-camera assistance

This is particularly important as proxy participation and AI-assisted cheating can be combined within the same interview.

4. Detect Deepfakes and Candidate Impersonation

Proxy candidates are part of a broader candidate-impersonation problem. Modern hiring fraud can also involve deepfake video, voice manipulation, synthetic identities, or other forms of identity manipulation.

Sherlock AI can help organizations identify potential impersonation through signals such as:

• Facial or identity inconsistencies

• Voice-related anomalies

• Video manipulation indicators

• Identity mismatches across interview stages

• Other signals associated with candidate impersonation

This helps hiring teams look beyond traditional proxy participation and identify other forms of identity-related interview fraud.

5. Combine Multiple Signals for Fraud Detection

No single signal can reliably establish that an interview is fraudulent. A candidate looking away from the screen, pausing before an answer, or using a different device may have a legitimate explanation.

Sherlock AI combines multiple signals across the interview, including:

• Identity

• Behavioral patterns

• Audio and video

• Device activity

• Environmental signals

• Cross-signal inconsistencies

By bringing these signals together, Sherlock AI can help recruiters identify interviews that may require additional verification rather than relying on a single red flag.

Conclusion

Proxy candidates create a fundamental challenge for remote hiring: companies may believe they are evaluating one person while actually assessing someone else.

As remote interviews and AI-assisted recruitment continue to evolve, organizations need stronger ways to establish candidate authenticity. Identity verification, continuous verification, live skill assessments, and multi-signal interview analysis can help hiring teams make decisions based on the candidate's actual identity and abilities.

The goal is not to make hiring more complicated or treat every candidate as suspicious. It is to ensure that the person who applies is the same person who interviews, demonstrates the required skills, and ultimately joins the organization.

Sherlock AI helps organizations strengthen interview integrity by combining identity verification, behavioral analysis, device and environmental signals, and interview-fraud detection to identify potential proxy participation, candidate impersonation, AI assistance, and other suspicious patterns.

When organizations can confidently connect a candidate's identity with their demonstrated skills, they can make more reliable hiring decisions and build a recruitment process that candidates and employers can trust.

FAQs

1. What is a proxy candidate in an interview?

A proxy candidate is a person who participates in an interview or assessment on behalf of another job applicant. The proxy may completely replace the applicant or provide hidden assistance during the interview.

2. What is the difference between a proxy candidate and an AI-assisted candidate?

In a proxy interview, another person participates in or helps conduct the interview for the candidate. In AI-assisted cheating, the candidate may use an AI tool to generate or improve answers. These can also be combined as part of a larger interview-fraud attempt.

3. How can recruiters detect proxy candidates?

Recruiters can look for patterns across identity, behavior, response timing, resume knowledge, voice, appearance, device activity, and performance across multiple interview stages. No single signal should automatically be considered proof of fraud.

4. Why are proxy interviews a problem for companies?

Proxy interviews can result in companies hiring people whose actual skills do not match their interview performance. This can lead to poor productivity, additional hiring costs, security risks, and loss of confidence in the recruitment process.

5. How can companies prevent proxy interviews?

Companies can use identity verification, continuous verification, live skill assessments, unexpected follow-up questions, interviewer training, documented escalation procedures, and AI-powered interview-fraud detection to reduce the risk of proxy participation.

6. Can Sherlock AI detect proxy interviews?

Sherlock AI is designed to identify proxy interviews and broader candidate-fraud patterns using multiple signals, including identity, behavioral, device, audio, video, and interview activity. It can help hiring teams surface suspicious patterns that require additional review.