Optimise your PKI infrastructure and protect your digital security
Introduction: why are digital certificates essential?
Digitisation has changed how businesses operate. To navigate this complex digital world, a basic understanding of cybersecurity is no longer enough. Businesses need deep insight into how digital certificates work and how they protect data against potential threats — from phishing attacks to more sophisticated cyber threats like ransomware. Investing in PKI technology lets organisations minimise breach risk and maintain their reputation.
In an increasingly digitised world, digital certificates are unavoidable for businesses wanting to protect their data and communication. Digital certificates, part of PKI systems, are essential for ensuring authentication, encryption and integrity of digital transactions. Without certificates like TLS/SSL we would face a world where information could easily be compromised.
Unfortunately experience shows that many organisations treat PKI (Public Key Infrastructure) as a trivial install without sufficient attention to architecture, security or management. That approach can lead to serious security gaps, data loss and compromised PKI certificates.
This article guides you through the most important aspects to consider when implementing or improving your PKI solution.
To illustrate the importance of digital certificates, consider concrete examples where businesses have suffered major losses due to inadequate security. A well-known case is the global company Equifax, which in 2017 experienced a data breach affecting nearly 147 million people. The attack was enabled by insufficient security that could have been prevented with proper certificate management. This underscores that businesses must prioritise security and implement necessary measures to protect their data.
To understand the importance of these certificates, it's important to know the risks that come with inadequate security. Every day businesses face attacks where hackers try to access sensitive information. Without the right security measures, these attacks can have catastrophic consequences.
What is a TLS/SSL certificate, and why is it important for your business?
A TLS/SSL certificate functions not only as data protection but also as a trust signal to customers. When customers see a website is secured with TLS/SSL they're more likely to interact with the business — leading to higher conversion and loyalty. E-commerce websites using TLS/SSL often report higher sales figures because customers feel safer entering payment details on a protected platform.
It's also important to understand that digital certificates aren't just relevant for websites. They're used in many applications, from email to mobile apps. If a business sends confidential emails without properly protected certificates, those emails can easily be intercepted by malicious actors. So every aspect of company communication should be considered when planning PKI structure.
TLS (Transport Layer Security) and SSL (Secure Socket Layer) are certificates that protect data exchange between two devices — for example your web server and the customer's browser. The certificates ensure communication is encrypted and that third parties can't read sensitive information.
When a user visits a secure website (indicated by the little padlock in the browser's address bar), a TLS/SSL certificate validates the site is authentic and the data is protected. Without proper certificate management you risk security breaches and potential damage to your company's reputation.
Digital certificate lifecycle
Digital certificates typically have a lifetime of 1–2 years. A clear process for administration and monitoring of certificates is therefore crucial:
- Registration and documentation: create and maintain accurate records of certificates, issue dates and expiry dates.
- Automated monitoring: use tools that automatically monitor expiry dates and warn of upcoming renewals.
- Renewal: establish clear procedures for timely renewal so operations and security aren't compromised.
Inadequate lifecycle management can lead to major incidents where critical systems suddenly become unavailable because certificates have expired.
HSM is also critical for complying with regulation and standards in many industries. In the financial sector it's necessary to comply with data protection and personal-data storage rules. The HSM's ability to protect private keys makes it easier for businesses to demonstrate compliance — which can protect against legal problems and fines.
Security with HSM (Hardware Security Module)
One of PKI infrastructure's most important components is secure storage of private keys. A Hardware Security Module (HSM) is a physical device ensuring private keys never leave the module unencrypted — significantly reducing compromise risk.
Benefits of using HSM include:
- High security against external threats and internal misuse.
- Certified security meeting strict compliance standards.
- Reduced risk of loss and compromise of keys.
Businesses not using HSM risk serious security breaches where sensitive data and trust are compromised.
Code-signing certificates: control who signs software
Code-signing certificates are used to sign software, proving the software vendor's authenticity and ensuring software hasn't been altered after signing. Misuse of code-signing certificates can have serious consequences like malware distribution.
Investment in training and education of employees handling code-signing certificates also matters. Having security protocols is only part of the solution; employees must also be aware of the risks associated with faulty signatures and certificate misuse. Regular training sessions can help prevent the human errors that often cause security incidents.
To secure code-signing certificates we recommend:
- Restrict access to the certificates and track who has access.
- Introduce monitoring and logging of certificate use.
- Use HSM for storage of code-signing certificates' private keys.
Encryption and backup of private keys
In an organisation where encryption plays a central role, it's essential to control both public and private keys. Encrypted data can quickly become unusable if keys are lost. So your organisation should ensure:
- Controlled key administration with clear procedures.
- Backup of private keys with appropriate security measures.
- Regular validation and testing of backup and restore processes.
If decryption keys are lost, you risk catastrophic data loss that can seriously damage operations and credibility.
Disaster recovery for digital certificates
Backup and recovery of private keys should also be tested and evaluated regularly. Good practice is to have both a local and an offsite backup of keys in case of natural disasters or other emergencies. This ensures the business can restore critical data quickly and effectively.
A robust PKI solution requires not only daily security but also a solid disaster recovery plan for when something goes wrong.
Essential steps in the disaster recovery process:
- Clear, documented procedures for recovering PKI infrastructure.
- Regular testing of the disaster recovery plan.
- Evaluation and updating of plans based on new threats and technological change.
Businesses without a disaster recovery plan risk extensive downtime and potentially permanent loss of critical data and certificates — which can be both costly and devastating.
The importance of a trusted Certificate Authority (CA)
Trust in digital certificates depends heavily on the CA that issues them. Certificates from reputable CAs guarantee that issuance and administration follow strict security practices.
An effective disaster recovery plan can also include working with external consultants specialising in PKI. These experts can help evaluate your current infrastructure, identify weaknesses and design a plan that scales with your growth and changing needs.
- Use a reputable CA with documented security standards.
- Continuously check the CA's security practices.
- Consider a combination of internal and external CAs depending on your needs.
How we can help with PKI infrastructure
If your current PKI solution is set up incorrectly or security is not properly managed, help is available. We can review your existing PKI infrastructure, identify potential security risks and implement optimal solutions.
With our experience in digital security we can deliver:
- Optimal certificate administration and monitoring.
- Securing private keys with HSM.
- Effective disaster recovery planning and implementation.
Do you need advice?
Businesses should also consider attending conferences and seminars where they can learn about the latest trends in PKI and digital certificates. This gives insight into how other businesses handle similar challenges and can inspire improvements in their own processes.
Choosing the right CA can also give businesses access to advisory and resources to help improve security. Many CAs offer tools and support to help implement PKI solutions and ensure they meet best practices.
Have questions or want help with your PKI infrastructure? Our specialists are ready to advise and find a tailored solution matching your needs and protecting your business against digital threats.
Contact us today for a no-obligation chat and secure your company's digital security with a robust, reliable PKI solution.