RELAX. YOUR DATA STAYS PROTECTED – EVEN AFTER A BREACH.
Data security that starts with the data itself.
Perimeters and access points can be overcome. What counts is what an attacker finds once inside. We protect sensitive data where it is stored and where it is put to work – with format-preserving encryption that leaves structures and processes intact.
Format-preserving encryption
OpenText SecureData
AHV number
Plaintext
756.1234.5678.97
Protected
756.7821.8569.58
IBAN
Plaintext
CH93 0076 2011 6238 5295 7
Protected
CH82 3908 0908 8939 0443 0
Credit card
Plaintext
4111 1111 1111 1111
Protected
4111 0645 3544 1111
Plaintext
max.muster@example.com
Protected
xfr.wvpfry@example.com
Same format, protected content. Fictitious plaintexts; ciphertexts recorded with OpenText SecureData in the Prewen demo environment.
What sets us apart
Protection that starts at the data.
01
Protection at the source.
Sensitive values are encrypted, not just the connection around them. If a record is siphoned off, it cannot be used without the key – the data value itself remains useless to unauthorised parties, while format and referential logic are preserved.
02
Access by role, not by login.
The right to decrypt depends on role and policy, not on merely having an account. A valid or stolen login is not enough to get at the plaintext data.
03
Without rebuilding your applications.
Format and structure are preserved – lookups and joins keep working on the protected fields, and decryption takes place only where the role permits it.
Solutions
Three ways to protect sensitive data.
Data-centric security
Format-preserving encryption and tokenisation for your sensitive fields.
Learn more
PKI & certificates
Certificates, Certificate Lifecycle Management and HSM – as a partner of Entrust.
Learn more
Security for AI
One prompt is enough for personal data to leave a company. Together with you, we decide what the AI needs to know about your people – and what it does not.
Learn more
Try it yourself
Tangible, not marketing.
See format-preserving encryption directly in your browser – a name, an IBAN, an AHV number (Swiss social security number), encrypted and yet in the same format.
SIX Group and Swisscom rely on data-centric security from Prewen. SMEs use Praevana to protect their data when using AI.
Insights
Knowledge from practice.
All insights
Article
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A weak foundation grows weaker still: what Trump v. Slaughter means for your data in the US cloud
A US ruling of 29 June 2026 weakens one of the pillars on which data transfers to the USA rest. What this means for Swiss companies with data held by US providers, and why keys outside the cloud provider's reach are a robust answer.
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Risk assessment for data in the cloud
This blog post examines data security when using cloud and SaaS services. It stresses the need for a structured approach to risk assessment in order to identify actual security risks and mitigate them effectively, rather than relying on blind trust in external providers. Finally, it presents data-centric security measures that help companies preserve their data sovereignty and develop a robust, compliant security strategy.
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Paradigm shift in data security: Year 0000 of data-centric protection.
Data security is at the top of many companies' agendas. Why a change in thinking is needed and how data-centric security represents a paradigm shift in data security.