The biggest misconception surrounding secure corporate communication
“End-to-end encrypted”. Hardly any other term is used as frequently as a security promise in the B2B sector. And yes: encryption is important, appropriate, and necessary. But anyone who bases secure business communication solely on this overlooks the real risk.
This is because most messaging and collaboration tools protect the content of a message while leaving a critical vulnerability virtually unaddressed.
One of the topics under discussion is metadata.
Recommended reading: End-to-end encryption: secure or deceptive?
Metadata: The invisible weak point in B2B communication
Metadata is the invisible layer behind every communication:
- Who communicates with whom?
- When does the communication take place?
- How often is communication carried out?
- Which networks?
This information may sound harmless – but it isn’t. For attackers, intelligence services, or in the context of industrial espionage, communication patterns can be more valuable than the content itself. Metadata can be used to reconstruct structures, hierarchies, decision-making processes, and operational procedures – even without reading a single message.
This poses an underestimated risk, particularly for companies and organizations that rely on secure corporate or C-level communication.
“We also encrypt metadata” – that’s great, but there’s room for improvement
Many providers of GDPR-compliant messaging solutions have responded to this criticism by emphasizing that metadata is also encrypted. This is a step forward. However, it does not fully resolve the underlying problem.
Because encryption does not mean:
- not available
- cannot be evaluated
- not invulnerable
Encryption simply means: harder to access. Anyone with sufficient resources, time, or criminal intent can attack encryption, circumvent it, or speculate on its future decryption – a scenario that is becoming increasingly relevant as computing power and AI advance.
The better question, therefore, is:
Why is this data stored (for such a long time) in the first place?
The more logical approach: data that doesn’t exist cannot be leaked
Truly secure corporate communication goes beyond encryption. The principle is simple:
What does not exist cannot be compromised.
At Teamwire, we follow a security philosophy that consistently implements this approach – using a zero-trust security model.
Anonymization and pseudonymization of user data
Personal data is processed from the outset in a way that makes it structurally difficult to identify individual persons.
No tracking of communication links
Teamwire does not track communication patterns. Who speaks to whom and when is neither logged nor analyzed.
Clear data retention rules – controlled by the customer
Data is automatically deleted after defined periods. Crucially, the data retention policies are not dictated by the provider but configured by the customer themselves – for example, to three months, six months or longer. Anything older than this is automatically and completely removed.
There is no unnecessary long-term storage that could be targeted in the event of an attack. Data sovereignty, therefore, lies with the customer rather than the provider.
No address book storage
An often underestimated risk: many apps read and store users’ address books. Teamwire does not do this. To protect your contacts, all contact details are anonymized using hash functions (SHA-256) and deleted from our servers immediately after you connect with colleagues.
Read all about the Teamwire security policy here.
Secure corporate communication for critical infrastructure, law enforcement, public authorities, and the healthcare sector
In regulated and safety-critical environments, this difference is not a technical quibble – it is crucial.
Within the police, government agencies, hospitals, or critical infrastructure, the disclosure of communication structures can have real-world consequences: operations put at risk, investigations compromised, patients’ rights infringed, or vulnerabilities created for targeted cyberattacks.
More than half of German police forces now rely on Teamwire as a secure messaging solution – precisely because of this consistent approach to security. For example, the platform also proved its worth as a reliable communication solution for security authorities during the 2024 European Football Championship in Germany.
Unlike US-based tools such as WhatsApp or Microsoft Teams, Teamwire, as a European GDPR-compliant messaging solution, offers complete data sovereignty: all data is stored exclusively on German servers.
Recommended reading: Security in the company starts with people: 7 tips for the structured development of a security culture
The question every business should ask
If you or your organization are currently using a messaging or collaboration solution that advertises encryption, ask yourself a simple question:
How much data is still on the server?
If the answer is unclear or uncomfortable, it is worth taking a closer look at the security architecture of your communications solution.
You can read here about what we at Teamwire do to ensure the security of your data and that of your customers and patients: teamwire.eu/en/product/security/
Try Teamwire for free and discover how secure business communication can work for your organization.
Our collection of success stories, featuring real-life examples from the critical infrastructure, public authorities, law enforcement, and healthcare sectors, offers further insights.
What does end-to-end encryption mean in business communications?
End-to-end encryption (E2EE) ensures that the content of messages can only be read by the sender and the recipient – not by the service provider, nor by third parties. It is a key security feature, but it protects only the content of the communication. Metadata such as the time of communication, frequency, or the parties involved often remain unprotected or continue to be stored on servers.
What is metadata, and why is it relevant to security?
Metadata describes the context of a communication: who is communicating with whom, when, how often, and via which networks. Although it does not contain the content of the messages themselves, it can provide insights into organizational structures, decision-making processes, and operational procedures. For attackers, intelligence agencies, or in the context of industrial espionage, metadata is often more valuable than the messages themselves.
What is the difference between encrypting and anonymizing communication data?
Encryption protects data from unauthorized access, but the data remains on the server. Anonymization and pseudonymization go one step further: they prevent stored data from being linked to a specific person or communication relationship in the first place. Ideally, unnecessary data is not stored in the first place or is automatically deleted, based on the principle that what does not exist cannot be leaked.
What are data retention rules, and why are they important for IT security?
Data retention rules determine how long data is stored before it is automatically deleted. The shorter the retention period, the smaller the potential attack surface. In secure enterprise communication solutions such as Teamwire, these rules can be configured by the customer themselves – meaning that control over their own data lies with the company, not the provider.
Why isn’t WhatsApp a suitable solution for business communication?
WhatsApp is a consumer app that is not designed to meet the requirements of businesses, public authorities, or regulated sectors. It stores address books on US servers, cannot be used in a GDPR-compliant manner, and offers no control over data storage or communication data. Dedicated European business messenger solutions are required for secure corporate communication – particularly in critical infrastructure sectors, public authorities, or the healthcare sector.
What is a zero-trust security approach in corporate communications?
Zero Trust is a security model that does not automatically trust any user, device, or network – not even within one’s own organization. Every access attempt is continuously verified. In the context of corporate communications, this means that even if an attacker gains access to the network, they cannot automatically access communication data. Teamwire implements this concept in conjunction with ISO 27001 and C5 certification.
Which messaging solution is GDPR-compliant and suitable for public authorities and critical infrastructure operators?
Public authorities, security organizations, and critical infrastructure providers require messaging solutions that offer complete data sovereignty: data storage on German or European servers, no transfer to third countries, zero-trust architecture, verifiable certifications, and the option of on-premises operation. Teamwire meets these requirements and is used by, amongst others, more than half of Germany’s police authorities.
