By Nathan Miller, President & Founder at Rentec Direct. Rentec Direct were finalists in the ‘Best SaaS Product for Construction and Property Management‘ award at the 2025 SaaS Awards.

Once an administrative convenience, property management software has become the backbone of modern real estate operations, streamlining everything from tenant screening to rent collection to property maintenance. As an industry traditionally slow to adopt new technology accelerates its digital transformation, these platforms are collecting more and more highly sensitive information from both property owners and tenants, including property records, financial account details, tenant applications and tax documents. While all SaaS platforms face cybersecurity risks, PropTech systems are becoming particularly high-value targets due to the sensitive data they store and the potential vulnerabilities that can expose landlords, property managers and tenants to fraud, breaches and disruption.

Key players have been driving the industry forward in security innovation in recent years, introducing features like text-based two-factor authentication and passkey-based authentication to counter increasing phishing attacks and shifting user expectations. As the threats facing property managers grow increasingly sophisticated, the gap between secure and vulnerable SaaS platforms becomes wider. Protecting highly sensitive data now means more than a basic compliance checklist, leaving property owners to navigate an environment where their software choice directly shapes the security and resilience of their business.

Protecting Tenant Data

Tenant applications contain some of the most sensitive information imaginable, making them one of the highest-risk components of any property management software platform. Social Security numbers, bank account details, employment history and direct contact information are all prime targets for phishers, scammers and cybercriminals.

Unfortunately, many platforms still fall short. Common missteps include storing data in plain text, lacking encryption, or allowing over-permissioned access, all of which increase the likelihood of misuse or accidental exposure. Even small gaps in security create significant risk when tenant data is scattered across portals, internal applications, email threads and attachments. A proactive approach to securing this highly sensitive information not only prevents breaches, but also positions platforms up for long-term success by reducing legal exposure, strengthening compliance and building tenant trust.

Closing the gaps:

• Require true end-to-end encryption for all sensitive data, both in transit and also encrypting the data at rest.
• Limit access by enforcing strict role-based permissions so users only see the information necessary for their responsibilities.
• Conduct regular data audits to identify outdated, redundant or unnecessarily stored data, and securely delete what’s no longer needed.

Secure Payment Processing

Processing large payments is another sensitive, high-risk function of any property management software. Application fees, deposits, rent payments, owner disbursements and vendor payments all carry financial information that, if compromised, could lead to fraud or regulatory violations.

Most platforms rely on third-party payment processors to securely deposit funds directly into property managers’ accounts, so it is critical to thoroughly vet the security posture of these partners. Threats like man-in-the-middle attacks, PCI non-compliance and exposed transaction data can put landlords, property managers and tenants at risk. Even small vulnerabilities in payment processing can create cascading problems across operations.

Closing the gaps:

• Vet third-party providers for PCI DSS compliance (Payment Card Industry Data Security Standard) and NACHA compliance (National Automated Clearing House Association) to ensure strong regulatory and security standards. Perform regular security reviews to maintain system integrity.
• Use tokenization to avoid storing raw payment details and minimize exposure in the event of a breach.
• Employ rigorous identity verification for all online payments to protect accounts and prevent unauthorized access.

Control Access

Property management teams—and even independent landlords—often operate across multiple locations and devices, creating opportunities for cyberattacks. Mobile apps, tenant portals and cloud-based dashboards streamline operations, but they also increase the number of entry points where sensitive data can be accessed or compromised.

Poor password hygiene, shared logins and unsecured personal devices are all common weaknesses that can serve as attack points for criminals. Without strict access controls and active monitoring in place, staff or tenants can unintentionally expose critical information.

Closing the gaps:

• Enforce multi-factor authentication and passkeys across all accounts, devices and portals. Require unique logins and eliminate shared credentials for staff and tenants.
• Monitor and log user activity to quickly detect unusual behavior or unauthorized access.
• Regularly review and update permissions to remove outdated or unnecessary access as staff roles change, and owners and tenants turnover.

Assessing Integrations and APIs

Modern software platforms—PropTech or otherwise—commonly connect different solutions and tools into one ecosystem to deliver a seamless user experience. At my property management software company, we have over thirty integrations that power essential functions like electronic signatures, landlord and renters insurance, pet screening, tax e-filing and more. These integrations streamline workflows and improve efficiency, but they also introduce new pathways where attackers can try to breach a system.

Insecure Application Programming Interfaces (APIs), outdated integrations or third-party partners with weak cybersecurity practices are some of the most overlooked risks in software development. A single vulnerable integration can undermine even the strongest internal security measures, exposing sensitive data or enabling unauthorized access to connected systems. As SaaS platforms continue to expand their capabilities, this interconnectedness becomes both a strength and a liability.

Closing the gaps:

• Conduct regular penetration testing, not only on core platform functionality, but on every integration to identify weak connection points.
• Implement API gateways and strict authentication protocols to control, filter and monitor how data is exchanged between systems.
• Reassess all vendor and integration partner security on an annual basis to ensure their practices still meet your standards as threats evolve.

Other Commonly Overlooked Threats

Many software teams assume that backups alone are sufficient for security, but real-time monitoring and detection tools are critical. Bad actors can be active in systems for weeks or even months unnoticed, gathering information before launching an attack. Unfortunately, sometimes these bad actors can be insider threats—whether accidental or malicious. Employees, contractors or vendors with different levels of access can unintentionally (or intentionally) expose sensitive data. Another common misstep happens when departing or changing staff retain access or credentials longer than they should.

Having an effective incident response plan in place is critical to ensuring your team can act quickly and decisively when unusual activity occurs. The speed and clarity of your response can often determine how much damage is ultimately prevented.

Real-time traffic monitoring is also critical to identify new threats. It is becoming increasingly challenging to stay ahead of the software flaws that affect web and SaaS providers, and if your platform relies on standard system updates to keep out hackers and programmatic flaws, you could be weeks or months behind the hackers who are actively exploiting zero-day flaws.

Closing the gaps:

• Deploy real-time monitoring tools that instantly detect anomalies and trigger automated alerts for suspicious activity.
• Even the most secure networks and strongest policies are not effective if employees and vendors aren’t informed. Conduct regular training on phishing, data handling, device security and social engineering.
• Compliance should be an ongoing process, not a one-time project. Build regulatory requirements directly into system design and schedule at least quarterly compliance reviews.
• Enforce least-privilege access and automate deprovisioning so access is updated as soon as roles change or staff and vendors depart.
• Install a reliable web application firewall (WAF) that actively scans incoming and outgoing traffic and is updated daily to identify and help stop zero-day exploits.

Closing the Blind Spots

Security is changing—fast. Proactive security is no longer just a protective measure; it’s a competitive advantage. The SaaS providers shaping the future of PropTech are those that treat cybersecurity and data privacy as core product features and prominent selling points. Customers increasingly expect transparency and resiliency around security practices—and trust is hard to buy.

Strong security and privacy features directly align with emerging regulatory trends and evolving consumer expectations. As compliance requirements become even more complex and high-profile breaches dominate the headlines, smart property managers will be looking for tools that help them stay ahead of risk, not simply respond to it.

Now is the time to reevaluate your technology, challenge your assumptions and reinforce your systems. We can strengthen both our clients and the entire software ecosystem by leading with transparency, proactive security and continuous improvement. Built-in cybersecurity is no longer optional—it’s essential.