What it protects on the server
That entropy feeds the values the server generates, where weak randomness would be a real problem.
- Session identifiers
- Authentication challenges
- Cryptographic salts
Device-Level Protection
Security built for the way we communicate today
Discover how QuantumChat protects your communications with post-quantum encryption, no metadata storage, Phantom Chat, and Zimperium device threat defense.
Quantum entropy
The randomness everything else depends on
Randomness is the foundation of all cryptography: a predictable key protects nothing. That is why our servers take their entropy from a hardware quantum generator, which draws randomness from a physical phenomenon instead of computing it.
And what it does not do, said plainly
The keys that encrypt your messages are not generated here. They are created and stay on your device, inside its secure store, and the server never sees them. The quantum generator strengthens the server side; your conversation is protected by end-to-end encryption.
Beyond the conversation
ZoneAlarm by Check Point
Coming soonYour digital world deserves another layer of protection.
QuantumChat protects your conversations. ZoneAlarm by Check Point extends the offering to your device: browsing, networks, apps and files. Complementary areas of security, a broader perspective.
ZoneAlarm Mobile Security
Protection for iOS and Android against fraudulent links, risky Wi-Fi networks and other mobile threats.
ZoneAlarm Extreme Security NextGen
Multi-device protection for computers and mobile devices, with features that vary by operating system.
Mobile Security
Browsing and links
Anti-phishing protection and checks of links and QR codes before visiting risky sites.
Mobile Security
Wi-Fi networks
Detection of unsafe connections and interception threats on wireless networks.
Mobile Security
Apps and device
Risky configuration alerts. Malicious app detection is available on Android.
Extreme Security NextGen
Antivirus and firewall
Malware scanning and control of inbound and outbound traffic on Windows.
Extreme Security NextGen
Ransomware defence
Detection of file-hijacking behaviour and recovery features, depending on platform.
Extreme Security NextGen
Documents and downloads
Isolated analysis of suspicious files and removal of dangerous content from supported documents.
Explore QuantumChat
Your world. Your conversations. Your space.
Communication
Encrypted messaging and calls with post-quantum cryptography. Our infrastructure cannot reconstruct who communicates with whom.
Encrypted Vault
A fully local encrypted storage for sensitive files, images, videos, documents, notes, and a private calendar. No cloud sync, no server backup - accessible only from within QuantumChat.
Privacy
No email required. No phone number required. Minimal data collection. Privacy-first design.
QuantumChat
How QuantumChat works
Discover how QuantumChat protects your communications with post-quantum encryption, no metadata storage, Phantom Chat, and Zimperium device threat defense.
Minimal exposure. Clear limits.
QuantumChat is not designed to function as a data repository or a social platform. Its purpose is to enable secure communication, not to collect or retain information beyond what is required for the service to operate.
Minimal exposure. Clear limits.
By limiting unnecessary data persistence and avoiding centralized conversation archives, QuantumChat reduces potential exposure and the impact of unauthorized access.
Minimal exposure. Clear limits.
At the same time, no digital system can guarantee absolute security in every scenario. QuantumChat does not promise the impossible. Instead, it is built to reduce risk, limit attack surfaces, and provide users with greater control over how and when their communication exists.
Minimal exposure. Clear limits.
Security is an ongoing process, not a fixed state. QuantumChat is designed to evolve alongside emerging threats while remaining transparent about its scope and limitations.
Calls
Voice and video calls are protected using the same security approach, designed to keep conversations private while they happen.
Protected communication by design
QuantumChat secures private communication through modern encryption mechanisms applied to both messaging and voice or video calls.
Messages
Messages are protected while in transit, with the objective of preventing unauthorized access and reducing the possibility of interception.
Phantom
Phantom Chat is designed for situations where messages should exist only while both participants are actively connected.
Phantom
When a Phantom Chat session is created, the conversation remains available only as long as both users are present in the session. Once one participant leaves, no further messages can be exchanged. When the session is closed by both parties, the conversation is destroyed.
Phantom
Phantom Chat is intended for highly sensitive exchanges where retaining message history is neither necessary nor desirable. There are no conversation backups and no long-term message storage associated with this mode.
Phantom
This gives users direct control over when communication exists and when it ends.
Built for today's mobile reality
Designed for modern mobile threats and cloud connectivity from day one.
FAQ
Frequently Asked Questions
Discover how QuantumChat protects your communications with post-quantum encryption, no metadata storage, Phantom Chat, and Zimperium device threat defense.
01How does QuantumChat encrypt messages?+
QuantumChat encrypts messages using post-quantum cryptographic algorithms before they leave the sender's device. Only the intended recipient can decrypt the messages. There is no centralized message repository - messages exist only on sender and recipient devices.
02Does QuantumChat store messages on servers?+
No. The server keeps each message as an encrypted envelope it cannot read, only until it reaches its recipient, and only that recipient can decrypt it. Our infrastructure cannot reconstruct who communicates with whom.
03What is Zimperium Mobile Threat Defense in QuantumChat?+
Zimperium Mobile Threat Defense (MTD) is integrated into QuantumChat's 12-month subscription to provide device-level security beyond encrypted messaging. It actively monitors the device for malware, zero-click exploits, malicious applications, and system-level threats - protecting the environment in which QuantumChat operates.
04Can QuantumChat users take screenshots?+
No. QuantumChat blocks screenshots and screen recording across the entire application. If a screenshot or recording is attempted, the screen appears black. This applies globally to all app screens.