How secure are electronic signatures?
Electronic signatures are more secure than paper signatures. They create an immutable record of who signed, when, and whether the document was altered — something ink on paper can never do.
Encryption in transit and at rest
Reputable e-signature platforms encrypt documents using TLS 1.3 during transmission and AES-256 at rest. This means your documents are unreadable to anyone who intercepts them in transit or gains unauthorized access to storage.
Tamper detection
When a document is signed, a SHA-256 cryptographic hash is computed. Any change to the document — even a single pixel — produces a completely different hash. This makes tampering immediately detectable.
Audit trail
Every signing event is logged: timestamp, signer's IP address, browser user-agent, geolocation (when available), and the signing sequence. This creates a forensic record that can be presented in court.
Identity verification
E-signature platforms verify identity through email verification, unique signing links, and optional multi-factor authentication. Enterprise solutions can add SMS verification, knowledge-based authentication, and government ID checks.
Frequently asked questions
Can electronic signatures be forged?
E-signatures are harder to forge than wet ink signatures because they're tied to email addresses, IP addresses, and timestamps. The audit trail makes it far more difficult to deny signing than with a paper document.
What happens if someone tampers with a signed document?
Any modification to a signed document breaks the SHA-256 hash. SignOwl's verification page lets anyone check whether a signed document has been altered, providing instant tamper detection.
Is it safe to send sensitive documents for e-signature?
Yes, when using a reputable platform. SignOwl encrypts documents in transit (TLS 1.3) and at rest (AES-256). Documents are served over secure links and access is controlled by unique tokens.
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