This cybersecurity tool is an effective deterrence to zero-day attacks and more.

Application whitelisting refers to a list of apps and components an organization has authorized to use on its network. An application whitelist clears them for use, much like messages from a whitelisted email address are allowed through filters, and rejects all others.

An app or app component must be whitelisted to operate on the system. This helps to prevent the running of potentially harmful elements, like malware execution and unauthorized or unlicensed software.

Understanding How Application Whitelisting Works

Applications and tools must be vetted and approved, then inventoried as safe. The whitelisting consists of:

• Scanning. Read drives and folders on a clean system to find applications you want to allow.
• Adding. Executable files discovered can be whitelisted, as well as new ones.
• Updating. Applications or files can be added or updated on the list.
• Enforcing. An executed whitelist creates a protected state for a network.

Only approved applications and processes can operate on the system or approved devices your workforce uses if they are whitelisted. This also prevents unauthorized tools from operating on this host.

Advantages and Disadvantages of Application Whitelisting

Is whitelisting the best for your system? Here’s what to consider.

Key Benefits of Application Whitelisting

• Reduces operational costs. Whitelisting also eliminates inefficient apps and processes. Avoiding security breaches helps to safeguard a company’s good name, which is at stake if data becomes compromised through an attack or hacking.
• Improves regulation compliance. Some industries require whitelisting for compliance—such as businesses with sensitive data, like credit cards or social security numbers. Preventing breaches fosters trust among customers.
• Reduces risk of security compromise. An attack becomes less likely if you carefully curate your whitelist and update it regularly. Rigorous control of third-party tools brings vulnerability to a minimum.

Potential Drawbacks of Application Whitelisting

• High maintenance. An updated whitelist requires constant evaluation and for administrators to respond immediately to issues. Hackers work to expose vulnerabilities, making it important to stay up to date.
• Trouble establishing a whitelist. If you’ve gone without a whitelist for years, you’ll likely have many apps that fall short of security requirements. It will take time and money to eliminate and replace them.
• Decreased productivity. The highest levels of security can impact productivity by creating potential challenges for the workforce, such as additional steps to ensure compliance. Employees might find the extra work frustrating.

Comparing Application Whitelisting with Blacklisting

Blacklisting refers to reactively blocking malicious apps from operating on a system. This means any file not included on the blacklist could slip through the system. The only restriction is on a finite number of known harmful programs.

Whitelisting is proactive; not waiting for a threat to emerge but preventing unauthorized apps from running. An app must be on the list to operate on the system.

Implementing Application Whitelisting in Your Organization

Adding whitelisting to your business starts with taking inventory and continues through constant updating. Looking forward, any app a user downloads on the system will be blocked, and your IT team will be notified.

• Step 1: Assessment. What are your security needs and what do you want to whitelist? Whitelisting IP addresses and URLs can help prevent malware attacks and phishing. Essential applications for your business are critical additions to a whitelist.
• Step 2: Choosing. What software solution best fits your entity’s needs? Should you go with application-based or network-focused solutions? Some programs include real-time monitoring and reporting, and others give you control.
• Step 3: Policymaking. Be sure they determine the criteria for what makes the whitelist and what to remove. What guidelines will you implement for adding and removing apps? What consequences will you establish for rule violations?
• Step 4: Training. Determine best practices and educate your workforce on how whitelisting works. This part is critical for cybersecurity, as well-trained staff can report suspicious activity or other potential breaches.

Best Practices in Application Whitelisting

When establishing an application whitelist for your organization, consider the following best practices:

• Audit. Determining which applications are necessary for business is as important as keeping potentially malicious apps out of your network. This review process provides a good opportunity to eliminate any software you might have outgrown or that no longer add value to your processes.
• Understand. How does your product operate? How will your whitelisting process handle essential tasks, such as initial reports, collecting data, protecting hardware, and updating its lists?
• Suspect. If you have files that don’t run, you should probably eliminate them. They could have malicious code, or, at minimum, take up disc space.
• Scan. Periodic checks will keep your program up to date and assess the efficiency of apps you’re using.

The Future of Application Whitelisting

Blacklisting has become a common practice, but the advantages of whitelisting continue to emerge. Being alert for new malware is much more challenging than establishing a list of approved programs.

As technology improves in the whitelist generation, they can keep up with and even stay ahead of malicious intrusions. Artificial intelligence, which impacts all areas of business and software, can play a key role in application whitelisting.

• Automated management. Decrease the need for manual modifications and updates with AI-generated creation and management.
• Adaptive controls. Algorithms can examine application performance to establish a baseline. This machine learning can regulate what becomes whitelisted.
• Zero trust security. With AI, apps must be known and trusted to get whitelisted, helping combat the threat of zero-day attacks from unknown malware.
• Compliance and reporting. You’ll have detailed reports of approved apps, which helps during routine audits and reporting.

Whitelisting can give your network the most dependable safeguards against attacks and inefficiencies in apps and programs. It can potentially cover vulnerabilities that you cannot depend on blacklisting to handle.

Are you adding whitelisting to your future projects? Need additional support maintaining your IT team’s capacity? Techmate provides support services such as IT staff augmentation to leading companies internationally. Reach out to us today.

Frequently Asked Questions

What does application whitelisting mean?

Application whitelisting is a process that includes generating a database of software apps that are deemed safe and provide access to your network. Blacklisting, by contrast, can only block undesirable programs from being installed, either maliciously or mistakenly.

Whitelisting blocks everything not approved while blacklisting reactively blocks unwanted applications and leaves open the possibility an unknown app could compromise the network.

What is whitelisting and how does it work?

Also known as allowlisting, whitelisting refers to cybersecurity processes that ensure only approved IP network addresses, emails, or software can access a network. It happens in two phases: Determining which agents and sources are trusted and thus accepted on the network, allowing them access and privileges.

What is an example of a whitelist?

A whitelist could include apps it grants access to from specific internal IP address ranges to its server. It can allow vetted software to run on system endpoints, or authorize user accounts access to data.

What is the difference between application whitelisting and antivirus programs?

Antivirus programs can discover and curtail known threats to your network. However, they aren’t as effective against new and complex malware that constantly evolves.

Application whitelisting can eliminate unauthorized apps from accessing and running on a system because it restricts access to known and trusted sources. Because whitelisting safeguards against any threat not approved for access, it’s an effective way to combat zero-day attacks.