Remote Work and Emerging Threats: Why Is Access Control More Important Than Ever?

Since 2020, the way we work has changed irreversibly. Between 2015 and early 2020, remote work increased globally by approximately 30–40%, with the COVID-19 pandemic serving as the main catalyst for the widespread shift to remote and hybrid work models. However, the growing popularity of remote work has also brought new security threats.

In 2024, CERT Polska recorded an unprecedented increase in cyber threats. The number of reports exceeded 600,000, with phishing being the most common type of incident. As a result, companies must pay greater attention to protecting their resources, as even a single unauthorized login can lead to a data breach or significant business disruption.

The Most Common Security Threats Associated with Remote Work

Remote work comes with its own specific risks. When teams are distributed and communication with new colleagues often takes place exclusively via email, verifying the identity of a message sender becomes considerably more difficult. The human factor plays a crucial role in the success of cyberattacks, and the lack of face-to-face interaction unfortunately creates opportunities for manipulation. These factors, combined with constant time pressure, make remote employees particularly vulnerable to social engineering attacks.

It is important to recognize that departments and industries only partially connected to IT (such as accounting, administration, and HR) are also targets of these threats. Due to insufficient security awareness training, employees in these areas are often unaware of how unauthorized access can be obtained or of the subtle tactics cybercriminals use to achieve it.

Phishing Attacks

Phishing remains one of the most common and effective forms of cyberattack. According to a report by Cofense, credential phishing accounted for 91% of published active threat reports.

In practice, a typical scenario looks like this: an employee receives an email that appears completely legitimate at first glance. The message seems to come directly from the CEO, CFO, or department manager. It contains an urgent request, such as sharing login credentials, approving a bank transfer, or clicking a link to an "important document." Amid everyday responsibilities, especially in remote and hybrid work environments where direct communication is limited, such messages often fail to raise suspicion.

The inability to quickly verify a request through direct contact, combined with time pressure and the sender's perceived authority, means that even security-conscious employees can fall victim to manipulation. This is precisely why phishing, despite its simplicity, remains one of the most effective tools used by cybercriminals.

Unauthorized Access

Unauthorized access most commonly results from exploiting application vulnerabilities or security misconfigurations. Sometimes, companies make their systems or services publicly accessible, such as web applications or APIs, without properly securing them. This may involve overly broad permissions, default passwords, a lack of encryption, or missing security updates. Cybercriminals actively scan networks for these kinds of "open doors," and when they discover them, they share information about the vulnerabilities on platforms that aggregate such findings. A single vulnerability or configuration error can be enough to expose sensitive data or allow attackers to take control of a system.

These incidents often attract significant attention because application compromises can have dramatic consequences, including sensitive data breaches, service outages, financial losses, and reputational damage.

Ransomware

Ransomware attacks are typically targeted at specific organizations, including private companies, public institutions, and nonprofits. Cybercriminals infiltrate infrastructure and encrypt data, then demand a ransom to restore access to it. Remote work makes these activities more difficult to detect, particularly in their early stages.

Malware

With the development of modern security systems, the risk of malware infections is decreasing, but it has not been eliminated. In organizations that fail to implement modern malware protection solutions or allow employees to use personal devices (BYOD), malware continues to pose a significant threat.

The Pillars of Secure Access – An Overview of Key Solutions

Secure access to corporate resources does not rely on a single solution but rather on an entire technology stack in which different components complement one another. One type of tool is not enough, as each addresses only a subset of potential risks. Effective security must therefore be built in layers, combining different approaches and systems. It is not about choosing one solution over another, such as a firewall instead of EDR, but about deliberately integrating them into a coherent security architecture.

VPN (Virtual Private Network)

A VPN is one of the fundamental tools used to secure data transmission between employees and corporate infrastructure. It functions as an encrypted tunnel, protecting transmitted information from interception or eavesdropping. For years, many organizations relied on the "castle-and-moat" model, which involved authenticating once and then granting broad access to network resources.

However, VPN solutions have several limitations, particularly high administrative costs, the need to maintain dedicated infrastructure, and lengthy access provisioning processes (waiting for VPN access approval can sometimes take several days).

VPNs are still effective for smaller organizations with low employee turnover. However, for larger enterprises or companies seeking the highest possible level of remote access security, solutions based on Zero Trust principles are a better option, as they enable dynamic and comprehensive control over user permissions.

Which organizations are best suited to VPN solutions?

• Small and medium-sized businesses that need a relatively simple and quick way to secure data transmission.
• Organizations with low employee turnover and relatively stable access requirements.
• Companies that are not yet ready for a full Zero Trust implementation but want to improve their baseline security.

MFA (Multi-Factor Authentication)

MFA, or multi-factor authentication, is not a technology in itself but an authentication principle requiring users to verify their identity using two or more factors. It is based on combining "something you know" (such as a password) with "something you have" (such as a mobile device). A popular form of MFA is two-factor authentication (2FA), which typically involves entering a six-digit code generated by a mobile application or approving a notification sent through such an application.

The latter option is considered one of the most effective forms of MFA. Authentication applications such as Google Authenticator and Microsoft Authenticator, in addition to generating standard one-time passwords (OTPs) locally, may also support approving access through push notifications displayed during authentication attempts. This type of solution is generally considered more secure than SMS or email codes, which may be intercepted during transmission.

Employees are often reluctant to use multi-factor authentication methods, particularly when these involve additional steps, such as manually entering codes from an application or waiting for an SMS message. In such situations, alternative methods are worth considering. One example is physical security keys (such as YubiKey), which simplify the entire process. In this case, having the key present or touching it is enough to provide an additional authentication factor and confirm the identity of the user attempting to connect.

Which organizations benefit most from MFA?

• All organizations, regardless of size or industry.
• Companies storing customer data, financial records, or other sensitive information.
• Organizations operating in regulated sectors, such as finance, legal services, and healthcare.

ZTNA (Zero Trust Network Access)

ZTNA is an implementation of Zero Trust architecture focused on securely granting and managing access to resources. Unlike traditional solutions (such as VPNs), which can provide broad access to infrastructure after authentication, ZTNA verifies an employee's identity for every access request. Whether a user attempts to open a file stored in Google Drive or log in to a target server, the required permissions are checked each time.

A system operating according to Zero Trust principles verifies not only the user's identity but also the context of the connection, including location, device security posture, assigned permission levels, and login time. Access is granted only when all relevant criteria are met. Consequently, even if cybercriminals manage to steal login credentials, their ability to exploit them is significantly limited. This approach considerably reduces the risk of lateral movement, meaning an attacker's ability to move through an organization's infrastructure after gaining initial access.

In addition to blocking unwanted traffic, ZTNA provides greater visibility into and control over legitimate activity, allowing organizations to see which employees access corporate resources, when they do so, and under what circumstances.

Which organizations benefit most from ZTNA?

• Medium-sized and large organizations seeking to reduce the risk of lateral movement within their networks.
• Companies that have previously experienced security incidents or face heightened regulatory requirements.
• Organizations planning to adopt or already operating large-scale remote and hybrid work models.
• Companies using a BYOD (Bring Your Own Device) model, where employees use personal devices. ZTNA enables access to corporate resources only from devices that meet regulatory requirements and internal security policies.

PAM (Privileged Access Management)

PAM (Privileged Access Management) is a solution that enables organizations to comprehensively control and monitor user access to their most sensitive resources. Its importance increases further in remote work environments. PAM not only supports access management but also enables the recording of user sessions, regardless of whether the user is an internal employee, an external consultant, or a freelance contractor.

One of the core capabilities of PAM (Privileged Access Management) systems is the ability to inject authentication credentials directly into connections to protected systems. End users are not given access to actual usernames or passwords. Instead, the PAM solution handles authentication automatically, eliminating the need for users to interact with confidential credentials. This approach significantly reduces the risk of unauthorized credential disclosure.

For example, an employee managing a company's social media account can be authenticated through a PAM solution without knowing the actual login credentials. This ensures that access is granted securely and under controlled conditions.

This approach protects organizations against human error and deliberate misuse while also enabling comprehensive auditing of user activities. It is particularly valuable for companies working with external vendors, marketing agencies, and IT consultants.

To learn more about the capabilities and practical applications of PAM, read our article on PAM for Managing Privileged Access for IT Vendors and OT Systems.

Which organizations benefit most from PAM?

• Organizations working with multiple external vendors, freelancers, or consultants.
• Companies employing remote or hybrid workers.
• Organizations where administrators or IT engineers manage access to critical systems.

Passwordless Solutions

Passwordless authentication solutions, which allow users to log in without entering a password, are becoming increasingly accessible, although adoption remains relatively slow. Examples include biometric authentication (such as fingerprint or facial recognition) and passkeys, which enable authentication using locally stored cryptographic keys protected by biometrics.

Passkeys eliminate the need to remember passwords and significantly improve security because each authentication request is cryptographically signed using a private key that never leaves the user's device. An additional layer of protection is provided by requiring authentication on the device storing the private key, using biometrics (fingerprint or facial recognition) or a PIN.

Currently, passkey technology is primarily supported by major technology companies such as Google, Apple, and Facebook, since implementing passkeys requires support from both the user's device and the online service.

Another popular approach to passwordless authentication involves using external identity providers (IdPs), such as Microsoft Entra ID or Okta. This allows users to authenticate through one service and then use that verified identity to access other systems with a single click.

Are passwordless solutions ready for widespread deployment? Technologically, yes. However, low user adoption remains a challenge. Creating a passkey or configuring an identity provider requires some initial effort, which often becomes the main barrier. People naturally tend to prefer immediate, convenient solutions, sometimes overlooking long-term benefits such as eliminating periodic password changes and improving protection against phishing.

Which organizations benefit most from passwordless solutions?

• Organizations that prioritize modern technologies and user convenience.
• Companies seeking to eliminate risks associated with password leaks.
• Organizations managing large teams or customer bases where fast, secure authentication is essential.

The Most Common Mistakes When Implementing Security Solutions

Implementing security solutions is a process that requires a precise and well-planned approach. Although every deployment creates a different environment with potentially unique vulnerabilities, certain recurring mistakes can be identified. The most common include:

• Failing to conduct a security assessment before selecting tools.
• Neglecting cybersecurity training for employees, including nontechnical staff.
• Overlooking the security of application-level communications.
• Implementing security policies without testing them in the target environment.
• Failing to monitor activity after deployment.

Many organizations allow employees to use personal computers, particularly because of their reliance on outsourced workers. Unfortunately, these arrangements often lack clearly defined processes for controlling and securing the work environment.

Without monitoring solutions such as EDR (Endpoint Detection and Response), and without oversight of personal devices, organizations have little real visibility into what is happening on employee endpoints. This makes security gaps more likely, for example when an employee's device becomes infected with malware downloaded from an unauthorized source.

Such mistakes and oversights can lead to serious security incidents and extremely costly consequences.

Are Companies Aware of the Security Risks Associated with Remote Work?

Cybersecurity awareness among organizations is steadily and noticeably increasing. More and more businesses recognize that IT security is not simply about having several tools in place, but also about maintaining an ongoing process of education and adaptation to evolving threats.

According to ISACA's State of Cybersecurity 2023 report, 70% of organizations worldwide have increased their IT security budgets in recent years, while 64% have reported improved security awareness among employees.

The media also play an increasingly important role. Cybersecurity-focused YouTube channels, industry publications, and coverage of real-world data breaches and phishing incidents all contribute to growing awareness. As a result, organizations are beginning to invest not only in security technologies but also in building a strong security culture.

However, it is important to remember that cyberattacks evolve just as quickly as defensive technologies. Organizations must therefore continuously update their knowledge and procedures. Awareness is increasing, but unfortunately, so are the skills and creativity of cybercriminals. Building organizational resilience is therefore an ongoing process that requires active commitment.

If you want to better prepare your organization for the challenges of remote work, contact us. Together, we will assess your company's needs and recommend solutions that can meaningfully strengthen its security posture.

This article was prepared by a 4Prime expert and subsequently edited with the assistance of artificial intelligence tools.