Remote work introduces some challenges when trying to balance functionality with security. When working remotely, your employees need to access the same internal services, applications, and information that they would have access to in the office. However, your organization also needs to protect its systems and information, as remote work introduces new vulnerabilities. You need to implement additional security precautions to prevent threat actors from taking advantage of those vulnerabilities.
Understand the threats to remote workers
Remote work can increase the likelihood of compromises to your organization’s sensitive information. Threat actors use different methods to target remote workers:
- Physical access to a device: If employees leave devices unattended in public, threat actor can tamper with them or steal them.
- Phishing: A threat actor emails, texts, or calls victims and poses as a legitimate organization requesting sensitive information (e.g. passwords, credit card numbers).
- Social engineering: A threat actor may gather information about your organization, or an employee, online (e.g. corporate website, social media accounts) to craft a targeted phishing message.
- Ransomware: A threat actor uses malware to access a device and the data on it and then denies access until a sum of money is paid.
- Wireless hijacking: A threat actor spoofs a Wi-Fi network by creating a network that uses the same name as a legitimate one (e.g. a coffee shop’s public Wi-Fi network).
- Eavesdropping: A threat actor listens to Wi-Fi traffic and records online activities and account passwords.
- Traffic manipulation: If a mobile device is infected with malicious code, a threat actor can insert their own traffic to influence data and obtain access to your organization’s network.
Manage mobile devices
If possible, your employees should use corporately owned devices when working remotely. Remind employees to follow your organization’s policies and use devices appropriately (e.g. for work purposes only).
If employees are using personal devices for work, keep the following risk in mind:
- Lack of security updates. Personal devices may not be updated or patched regularly, leaving vulnerabilities unaddressed.
- Weak password practices. Personal devices may not be protected with a PIN or password, and even if they are, easily guessed PINS or passwords may be used.
- Loss of control over information. If used for work purposes, personal devices may hold sensitive business information that your organization can’t manage appropriately.
Remind employees to follow organizational policies (e.g. storing business information in corporate repositories) when using personal devices, and communicate best practices for securing devices, such as enabling multi-factor authentication, never leaving devices unattended in public, and using anti-virus software.
Prepare your employees
If an employee has never worked remotely before, the transition can be surprisingly difficult. Set your employees up for success and clearly communicate the measures that they need to take to contribute to your organization’s cyber security.
- Have policies and procedures in place that outline, for example, the acceptable use of corporate devices and the management of corporate information.
- Ensure your employees know who to contact (and have the correct contact information), especially if they experience security issues or their devices are lost or stolen.
- Train your employees on cyber security issues and best practices, such as spotting phishing attempts, creating strong passphrases and passwords, and using secure Wi-Fi networks.
Use security tools
There are security tools that your organization can use to add additional layers of protection for your networks, systems, and devices. The security tools below are just some examples of ways that you can reduce the risks of malicious intrusions caused by malware or other cyber attacks.
Security tools can reduce the risks to your organization, but keep in mind that no tool is perfect. You should never rely on a tool alone. Be sure to implement other security controls as well.
Virtual private network (VPN)
VPN is a secure, encrypted tunnel through which information is sent. You can use a VPN to establish a secure connection that uses authentication and protects data. Using a VPN ensures that your organization has a private communications network through an untrusted network. Let your employees know that they must use a VPN to connect to work servers.
A firewall is a security barrier placed between two networks. It controls the amount and the types of traffic that can pass between the networks. A firewall adds to your security by monitoring all incoming and outgoing traffic and filtering out known-bad traffic.
You should use anti-virus software and ensure that this software is updated regularly. Anti-virus software defends devices against malware by scanning files and your system.
Application whitelisting is a technique used to control which applications can run on corporate devices. Your organization can create a whitelist that defines all approved applications, preventing users from running and installing unauthorized software on corporate devices.
With employees working from home or public locations, you should take the following measures to protect devices. Encourage employees to take the same measures on their personal devices as well.
- Use multi-factor authentication. To add an additional layer of protection, require two or more authentication factors to unlock devices, such as a PIN and a fingerprint.
- Use password-enabled screensavers. When a user is inactive after a defined period, their device locks.
- Update and patch. Set up devices to run automatic updates for operating software, primary applications, and security software.
- Turn off Bluetooth or Wi-Fi when not in use. Turning off Bluetooth and Wi-Fi prevents threat actors from attempting to connect to and access devices.
Your organization is responsible for protecting the sensitive information that it collects and uses. Keep in mind that sensitive information is a high-value target for threat actors.
- Back up information. Information should be backed up regularly and back ups should be stored securely.
- Encrypt information. Use encryption to protect the confidentiality of sensitive information. For example, you should only allow users to access HTTPS-supported websites on corporate devices.
- Apply the principle of least privilege. Ensure that employees only have access to the information that they need to do their jobs. Controlling access can prevent unauthorized access to data and data breaches.
The tips above are a great place to start, but you can read through some of these related publications to find out more:
- Using bluetooth technology (ITSAP.00.011)
- Protect your organization from malware (ITSAP.00.057)
- Spotting malicious emails (ITSAP.00.100)
- How updates secure your devices (ITSAP.10.096)
- Cyber security tips for remote work (ITSAP.10.116)
- Best practices for passphrases and passwords (ITSAP.30.032)
- Virtual private networks (ITSAP.80.101)