“An 'infrastructure of trust' cannot be established through systems and policies alone.”
Security is commonly perceived as the task of 'blocking things.' However, security on the ground is far more complex. While strictly protecting client data, one must simultaneously engineer an environment where employees can work without inconvenience. Simply tightening rules does not suffice; the entire organization must naturally comprehend and practice security.
Striking that exact equilibrium is what the RSQUARE Security Team is forging right now. From real-time threat response and privacy protection to phishing mail countermeasures, AI-driven detection systems, and the Clean Desk Project. We sat down with Team Leader Jin-su Ju, who shields the company’s trust from behind the scenes.
Jin-su Ju, Security Team Leader at RSQUARE
Q. Could you please briefly introduce yourself?
Jin-su Ju: I am in charge of corporate information security and privacy protection. I initiated my career as a server and network engineer, and subsequently traversed multiple industries including educational platforms, telemedicine services, and proptech firms. Although the sectors differed, I was ultimately holding onto the same question:
"How can we operate services more securely?" My motivation for joining RSQUARE aligns with this context. As a company commanding unrivaled data assets within the commercial real estate market, I wanted to challenge myself to build a trust and security architecture that matches that level of excellence.
Q. What specific responsibilities does the Security Team handle within the organization?
Jin-su Ju: We are the 'organization that shields the company’s trust.'
Externally, we take full responsibility for the safety of client data and services. We block external attacks like hacking, review security parameters prior to launching new services, and monitor anomalies in real-time.
Internally, our role is to engineer a workplace environment where employees can work with peace of mind. Cultivating an everyday security culture—encompassing access authority management, personal information protection, phishing mail simulation/response, security training, and operating security bulletin boards—is also a vital part of our duties. We are not an organization that only surfaces when an incident erupts, but rather one that proactively manages risks beforehand so that incidents do not occur.
Q. What is the team's most critical mission?
Jin-su Ju: It is discovering security threats in advance through a fresh perspective and resolving them swiftly to protect the precious corporate assets that our employees have built up.
Hence, I believe the Security Team should not be a body that merely manufactures rules, but a supportive partner that enables employees to work safely. When people think of security, it is easy to first associate it with software systems or solutions.
However, I view that the frontline of security is ultimately people. No matter how exceptional the policies and hardware equipment are, it is people who utilize them and people who operate them.
Another cornerstone principle is that "security is speed." Promptly detecting and responding to risks is far more critical than merely deploying a piece of technology. There is a phrase I frequently emphasize to my team:
"Don't overthink it. Just do it. Done is better than perfect."
Security undoubtedly demands prudence. However, when chasing absolute perfection, it often leads to a paralysis of execution. I want our team to be an organization that advances by executing swiftly, refining, and iterating.
Recently, thanks to a newly joined team member, we are also reinforcing AI-driven security automation. By mobilizing via coordinated alignment (Dong-Sim-Hap-Ryeok / 同心合力) to sophisticate our response frameworks and optimize internal processes, we are building a "small but powerful team."
Q. We heard you have directly developed and are operating an AI-driven response system.
Jin-su Ju: This represents one of our most significant shifts.
Within the company, logs spanning tens to hundreds of gigabytes ($GB$) accumulate daily. It is humanly impossible for personnel to manually analyze and respond to this volume. It is akin to a single security guard attempting to monitor every single CCTV stream across the entire city of Seoul.
To solve this, we have developed and deployed our own proprietary Immediate Response System utilizing AI services. Though it is in its nascent stage, we are incrementally expanding its functionalities, stretching from anomaly detection to automated alert dispatching and response guidance delivery.
The daily routine of the Security Team is a continuous cycle of unearthing and guiding against risk parameters based on various indices and analytics. We evaluate anomalies by reviewing the data parsed by the AI, and if necessary, we immediately sever access or dive into root-cause analysis.
Q. What philosophy do you hold when collaborating with other business divisions?
Jin-su Ju: Communication is the absolute key.
A security division can easily be perceived as a unit that only imposes restrictions on other departments. Therefore, I try to first comprehend the situation and objectives of the counterpart department. I prioritize listening to 'why this function is necessary' and 'why they prefer this specific method,' and within that framework, I search for a direction that satisfies both security integrity and operational convenience.
In fact, the Security Team participates right from the initial planning phases of a new service. Aligned with the service's direction, we co-design the personal information lifecycle and security policies together, and verify the actual technical implementation prior to launch. Business growth and security are not conflicting concepts; they are domains that must be architected together from the very beginning.
Q. The Clean Desk Project seems like an unexpected activity for a security team in a way.
Jin-su Ju: It has already been implemented quarterly for three years.
We have been able to sustain this continuously thanks to the active support of Team Leader Jin-ok Han and the members of the General Affairs Team. I would like to take this opportunity to extend my sincere gratitude to them.
Security is broadly bifurcated into administrative, technical, and physical security. The Clean Desk Project falls under physical security. It is an initiative designed to manage desks so that critical documents or storage media are not carelessly left exposed. If you look closely, it is far more than just simple tidying up.
Initially, employees found it somewhat unfamiliar. However, as a result of consistent operation, the storage methods for external hard drives and the management level of printed materials have visibly improved. In our recent audit, the security index across major evaluation parameters surged by approximately 40% or more.
The response speed against phishing emails has also accelerated substantially. A framework where incidents are processed within 10 minutes from report to mitigation has successfully taken root. This is a transformation that the Security Team could never have manufactured alone. It is entirely thanks to our employees who have embraced security as a core culture.
Q. Are there any goals you wish to achieve at RSQUARE moving forward?
Jin-su Ju: In sync with the company's global expansion, I want to contribute to engineering a "service that anyone across the globe can trust implicitly."
Security ultimately links directly to client trust. Moving beyond the baseline of simply preventing incidents, the ultimate goal is to make clients naturally perceive that "RSQUARE's services are safe to trust and use." I plan to continuously polish our data-centric security architecture and further advance our AI-driven automated response frameworks.
Q. Lastly, do you have any message for the employees?
Jin-su Ju: Our current level of security is not the achievement of the Security Team alone.
It was made possible because our employees immediately flagged phishing emails, adhered to security policies, and actively cooperated with the Clean Desk initiatives. I am deeply grateful to everyone.
Moving forward, the Security Team will continue to contemplate deeply to preserve both convenience and security. If you continue to stand with us as you do now, I am confident we can build an even safer and more trusted RSQUARE.
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“An 'infrastructure of trust' cannot be established through systems and policies alone.”
Security is commonly perceived as the task of 'blocking things.' However, security on the ground is far more complex. While strictly protecting client data, one must simultaneously engineer an environment where employees can work without inconvenience. Simply tightening rules does not suffice; the entire organization must naturally comprehend and practice security.
Striking that exact equilibrium is what the RSQUARE Security Team is forging right now. From real-time threat response and privacy protection to phishing mail countermeasures, AI-driven detection systems, and the Clean Desk Project. We sat down with Team Leader Jin-su Ju, who shields the company’s trust from behind the scenes.
Jin-su Ju, Security Team Leader at RSQUARE
Q. Could you please briefly introduce yourself?
Jin-su Ju: I am in charge of corporate information security and privacy protection. I initiated my career as a server and network engineer, and subsequently traversed multiple industries including educational platforms, telemedicine services, and proptech firms. Although the sectors differed, I was ultimately holding onto the same question:
"How can we operate services more securely?" My motivation for joining RSQUARE aligns with this context. As a company commanding unrivaled data assets within the commercial real estate market, I wanted to challenge myself to build a trust and security architecture that matches that level of excellence.
Q. What specific responsibilities does the Security Team handle within the organization?
Jin-su Ju: We are the 'organization that shields the company’s trust.'
Externally, we take full responsibility for the safety of client data and services. We block external attacks like hacking, review security parameters prior to launching new services, and monitor anomalies in real-time.
Internally, our role is to engineer a workplace environment where employees can work with peace of mind. Cultivating an everyday security culture—encompassing access authority management, personal information protection, phishing mail simulation/response, security training, and operating security bulletin boards—is also a vital part of our duties. We are not an organization that only surfaces when an incident erupts, but rather one that proactively manages risks beforehand so that incidents do not occur.
Q. What is the team's most critical mission?
Jin-su Ju: It is discovering security threats in advance through a fresh perspective and resolving them swiftly to protect the precious corporate assets that our employees have built up.
Hence, I believe the Security Team should not be a body that merely manufactures rules, but a supportive partner that enables employees to work safely. When people think of security, it is easy to first associate it with software systems or solutions.
However, I view that the frontline of security is ultimately people. No matter how exceptional the policies and hardware equipment are, it is people who utilize them and people who operate them.
Another cornerstone principle is that "security is speed." Promptly detecting and responding to risks is far more critical than merely deploying a piece of technology. There is a phrase I frequently emphasize to my team:
"Don't overthink it. Just do it. Done is better than perfect."
Security undoubtedly demands prudence. However, when chasing absolute perfection, it often leads to a paralysis of execution. I want our team to be an organization that advances by executing swiftly, refining, and iterating.
Recently, thanks to a newly joined team member, we are also reinforcing AI-driven security automation. By mobilizing via coordinated alignment (Dong-Sim-Hap-Ryeok / 同心合力) to sophisticate our response frameworks and optimize internal processes, we are building a "small but powerful team."
Q. We heard you have directly developed and are operating an AI-driven response system.
Jin-su Ju: This represents one of our most significant shifts.
Within the company, logs spanning tens to hundreds of gigabytes ($GB$) accumulate daily. It is humanly impossible for personnel to manually analyze and respond to this volume. It is akin to a single security guard attempting to monitor every single CCTV stream across the entire city of Seoul.
To solve this, we have developed and deployed our own proprietary Immediate Response System utilizing AI services. Though it is in its nascent stage, we are incrementally expanding its functionalities, stretching from anomaly detection to automated alert dispatching and response guidance delivery.
The daily routine of the Security Team is a continuous cycle of unearthing and guiding against risk parameters based on various indices and analytics. We evaluate anomalies by reviewing the data parsed by the AI, and if necessary, we immediately sever access or dive into root-cause analysis.
Q. What philosophy do you hold when collaborating with other business divisions?
Jin-su Ju: Communication is the absolute key.
A security division can easily be perceived as a unit that only imposes restrictions on other departments. Therefore, I try to first comprehend the situation and objectives of the counterpart department. I prioritize listening to 'why this function is necessary' and 'why they prefer this specific method,' and within that framework, I search for a direction that satisfies both security integrity and operational convenience.
In fact, the Security Team participates right from the initial planning phases of a new service. Aligned with the service's direction, we co-design the personal information lifecycle and security policies together, and verify the actual technical implementation prior to launch. Business growth and security are not conflicting concepts; they are domains that must be architected together from the very beginning.
Q. The Clean Desk Project seems like an unexpected activity for a security team in a way.
Jin-su Ju: It has already been implemented quarterly for three years.
We have been able to sustain this continuously thanks to the active support of Team Leader Jin-ok Han and the members of the General Affairs Team. I would like to take this opportunity to extend my sincere gratitude to them.
Security is broadly bifurcated into administrative, technical, and physical security. The Clean Desk Project falls under physical security. It is an initiative designed to manage desks so that critical documents or storage media are not carelessly left exposed. If you look closely, it is far more than just simple tidying up.
Initially, employees found it somewhat unfamiliar. However, as a result of consistent operation, the storage methods for external hard drives and the management level of printed materials have visibly improved. In our recent audit, the security index across major evaluation parameters surged by approximately 40% or more.
The response speed against phishing emails has also accelerated substantially. A framework where incidents are processed within 10 minutes from report to mitigation has successfully taken root. This is a transformation that the Security Team could never have manufactured alone. It is entirely thanks to our employees who have embraced security as a core culture.
Q. Are there any goals you wish to achieve at RSQUARE moving forward?
Jin-su Ju: In sync with the company's global expansion, I want to contribute to engineering a "service that anyone across the globe can trust implicitly."
Security ultimately links directly to client trust. Moving beyond the baseline of simply preventing incidents, the ultimate goal is to make clients naturally perceive that "RSQUARE's services are safe to trust and use." I plan to continuously polish our data-centric security architecture and further advance our AI-driven automated response frameworks.
Q. Lastly, do you have any message for the employees?
Jin-su Ju: Our current level of security is not the achievement of the Security Team alone.
It was made possible because our employees immediately flagged phishing emails, adhered to security policies, and actively cooperated with the Clean Desk initiatives. I am deeply grateful to everyone.
Moving forward, the Security Team will continue to contemplate deeply to preserve both convenience and security. If you continue to stand with us as you do now, I am confident we can build an even safer and more trusted RSQUARE.