Reduce the security and compliance risks of messaging apps with AWS Wickr

October 6, 2023: The post has been updated with an additional Region.

Effective collaboration is central to business success, and employees today depend heavily on messaging tools. An estimated 3.09 billion mobile phone users access messaging applications (apps) to communicate, and this figure is projected to grow to 3.51 billion users in 2025.

This post highlights the risks associated with consumer messaging apps and describes how you can use enterprise solutions — such as AWS Wickr — that combine end-to-end encryption with data retention to drive positive security and business outcomes.

The business risks of messaging apps

Evolving threats, flexible work models, and a growing patchwork of data protection and privacy regulations have made maintaining secure and compliant enterprise messaging a challenge.

The use of consumer messaging apps for business-related communications on both corporate and personal devices can make it more difficult to verify that data is being adequately protected and retained. This can lead to business risk, particularly in industries with unique record-keeping requirements. Organizations in the financial services industry, for example, are subject to rules that include Securities and Exchange Commission (SEC) Rule 17a-4 and Financial Industry Regulatory Authority (FINRA) Rule 3120, which require them to preserve all pertinent electronic communications.

A recent Gartner report on the viability of mobile bring-your-own-device (BYOD) programs noted, “It is now logical to assume that most financial services organizations with mobile BYOD programs for regulated employees could be fined due to a lack of compliance with electronic communications regulations.”

In the public sector, U.S. government agencies are subject to records requests under the Freedom of Information Act (FOIA) and various state sunshine statutes. For these organizations, effectively retaining business messages is about more than supporting security and compliance — it’s about maintaining public trust.

Securing enterprise messaging

Enterprise-grade messaging apps can help you protect communications from unauthorized access and facilitate desired business outcomes.

Security — Critical security protocols protect messages and files that contain sensitive and proprietary data — such as personally identifiable information, protected health information, financial records, and intellectual property — in transit and at rest to decrease the likelihood of a security incident.

Control — Administrative controls allow you to add, remove, and invite users, and organize them into security groups with restricted access to features and content at their level. Passwords can be reset and profiles can be deleted remotely, helping you reduce the risk of data exposure stemming from a lost or stolen device.

Compliance — Information can be preserved in a customer-controlled data store to help meet requirements such as those that fall under the Federal Records Act (FRA) and National Archives and Records Administration (NARA), as well as SEC Rule 17a-4 and Sarbanes-Oxley (SOX).

Marrying encryption with data retention

Enterprise solutions bring end-to-end encryption and data retention together in support of a comprehensive approach to secure messaging that balances people, process, and technology.

End-to-end encryption

Many messaging apps offer some form of encryption, but not all of them use end-to-end encryption. End-to-end encryption is a secure communication method that protects data from unauthorized access, interception, or tampering as it travels from one endpoint to another.

In end-to-end encryption, encryption and decryption take place locally, on the device. Every call, message, and file is encrypted with unique keys and remains indecipherable in transit. Unauthorized parties cannot access communication content because they don’t have the keys required to decrypt the data.

Encryption in transit compared to end-to-end encryption

Encryption in transit encrypts data over a network from one point to another (typically between one client and one server); data might remain stored in plaintext at the source and destination storage systems. End-to-end encryption combines encryption in transit and encryption at rest to secure data at all times, from being generated and leaving the sender’s device, to arriving at the recipient’s device and being decrypted.

Data retention

While data retention is often thought of as being incompatible with end-to-end encryption, leading enterprise-grade messaging apps offer both, giving you the option to configure a data store of your choice to retain conversations without exposing them to outside parties. No one other than the intended recipients and your organization has access to the message content, giving you full control over your data.

How AWS can help

AWS Wickr is an end-to-end encrypted messaging and collaboration app that was built from the ground up with features designed to help you keep internal and external communications secure, private, and compliant. Wickr protects one-to-one and group messaging, voice and video calling, file sharing, screen sharing, and location sharing with 256-bit encryption, and provides data retention capabilities.

Figure 1: How Wickr works

With Wickr, each message gets a unique Advanced Encryption Standard (AES) private encryption key, and a unique Elliptic-curve Diffie–Hellman (ECDH) public key to negotiate the key exchange with recipients. Message content — including text, files, audio, or video — is encrypted on the sending device (your iPhone, for example) using the message-specific AES key. This key is then exchanged via the ECDH key exchange mechanism, so that only intended recipients can decrypt the message.

Wickr network administrators can configure and apply data retention to both internal and external communications in a Wickr network. This includes conversations with guest users, external teams, and other partner networks, so you can retain messages and files sent to and from the organization to help meet internal, legal, and regulatory requirements.

Figure 2: Data retention process

Data retention is implemented as an always-on recipient that is added to conversations, not unlike the blind carbon copy (BCC) feature in email. The data-retention process participates in the key exchange, allowing it to decrypt messages. The process can run anywhere: on-premises, on an Amazon Elastic Compute Cloud (Amazon EC2) instance, or at a location of your choice.

Wickr is a Health Insurance Portability and Accountability Act of 1996 (HIPAA)-eligible service, helping healthcare organizations and medical providers to conduct secure telehealth visits, send messages and files that contain protected health information, and facilitate real-time patient care.

Wickr networks can be created through the AWS Management Console, and workflows can be automated with Wickr bots. Wickr is currently available in the AWS US East (Northern Virginia), AWS GovCloud (US-West), AWS Canada (Central), AWS Europe (London), and Asia Pacific (Sydney) Regions.

Keep your messages safe

Employees will continue to use messaging apps to chat with friends and family, and boost productivity at work. While many of these apps can introduce risks if not used properly in business settings, Wickr combines end-to-end encryption with data-retention capabilities to help you achieve security and compliance goals. Incorporating Wickr into a comprehensive approach to secure enterprise messaging that includes clear policies and security awareness training can help you to accelerate collaboration, while protecting your organization’s data.

To learn more and get started, visit the AWS Wickr webpage, or contact us.

Want more AWS Security news? Follow us on Twitter.