Is Gemalto Web Signer for NatWest safe?

Clean risk

Gemalto Web Signer for NatWest relays a smart-card PIN and payment documents to a local signing app on scoped Bacs and payment-portal pages.

On banking and payment-network sites (Bacs, Vocalink, IdenTrust, and related payment-portal domains), the extension reads the PIN typed into its signing dialog and the document data to be signed, then forwards them over a native messaging connection to com.gemalto.esignerwe, a locally installed Thales/Gemalto application. That application performs the smart-card (PKCS#11) signing on the user's machine and returns the signature to the page; the data does not leave the local device.

Gemaltov2.4.89Chrome Web Store
3Risk
Who publishes it

Thales DIS - 3 other listings from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Gemalto
Declared legal entity
Thales DIS
Registered address
Concorde Way Segensworth North, Whiteley, Fareham PO15 5RX, GB
Registered contact
David Liversidge

Same store account

3 other listings published from this account, 4k+ users between them, none of them carrying a finding.

Shared hosts - 17 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

collxp.com
Also called by 1 other listing: Gemalto Web Signer for Lloyds Banking Group
directdebitnetwork.com
Also called by 1 other listing: Gemalto Web Signer for Lloyds Banking Group
bacscom.mosaicsoftware.co.uk
Also called by 2 other listings
cloudtest.mosaicsoftware.co.uk
Also called by 2 other listings
dev.absolutepaymentsolutions.co.uk
Also called by 2 other listings, including Gemalto Web Signer for Lloyds Banking Group-Basic
directdebitnetwork.accountis.net
Also called by 2 other listings: Gemalto Web Signer for Lloyds Banking Group, Gemalto Web Signer for Lloyds Banking Group-Basic
etest.classicclient.co.uk
Also called by 2 other listings: Gemalto Web Signer for Lloyds Banking Group, Gemalto Web Signer for Lloyds Banking Group-Basic
hsmdemo.absolutepaymentsolutions.co.uk
Also called by 2 other listings, including Gemalto Web Signer for Lloyds Banking Group-Basic
atlanta.com
Also called by 3 other listings, including Gemalto Web Signer for Barclays, Web Signer for Barclays
beta.collxp.com
Also called by 3 other listings, including Gemalto Web Signer for Barclays, Web Signer for Barclays
biloxi.com
Also called by 3 other listings, including Gemalto Web Signer for Barclays, Web Signer for Barclays
apsportal.co.uk
Also called by 4 other listings, including Gemalto Web Signer for Barclays, Web Signer for Barclays
bl00.net
Also called by 4 other listings
paybacs.co.uk
Also called by 4 other listings
paygateservicedev.com
Also called by 4 other listings
paygateservicetest.com
Also called by 4 other listings
crouton.net
Also called by 5 other listings

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 2.4.89. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • See the address and title of every tab you have open

    tabs

  • Talk to a program installed on your computer, outside the browser's sandbox

    nativeMessaging

  • Store data in your browser

    storage

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • Read information about your displays

    system.display

Where it sends data

Destinations our analysis observed Gemalto Web Signer for NatWest contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • com.gemalto.esignerwe (local native messaging host)

    Gemalto Web Signer for NatWest sends data to com.gemalto.esignerwe (local native messaging host). Named as a recipient by 1 other extensions we have analyzed.

Updated 30 September 2026njdflbldikgkfimenejnjkekmmgengcc