LeaderSSL Support: offline:
Mo - Fr 9:00 - 18:00 CET time
Customer service Billing:

Monday — Friday:
9:00 - 18:00 CET time

Technical Support:

Monday — Friday:
9:00 - 18:00 CET time

Ordering system/certificate issuance:

24/7

LeaderTelecom B.V. is VAT-registered with the UK’s HM Revenue and Customs (HMRC) and has a UK VAT number (GB373878249) , so we can charge UK VAT as normal. All invoices for UK customers now include 20% VAT, although still denominated in EUR as the company’s tax residency is the Netherlands.

Certum Standard Code Signing in the Cloud


As low as £104.09 / year


Certificate allows software developers to ensure trusted and integrity of its software

  • Digitally sign 32-bit or 64-bit Portable Executable including *.exe, *.cab, *.jar, *.ocx, *.dll etc.
  • Remove "unknown software publisher" message
  • Verify the code's security and integrity since its signing
  • Verifies your organization

* — with the purchase on 3 years.

All prices excl. VAT

Order Now

Want to buy SSL-certificates at competitive prices? Its easy with LeaderTelecom!


Advantages of working with us

  • Experience. We have accumulated a wealth of experience over 13 years in the industry.
  • Coverage. We offer a wide range of services in the field of SSL certificates and cybersecurity.
  • Clients. Our customers are: AfterLogic, NW-Soft, Comindware, CRM-Consult, Technotop et al.
  • Worldwide. We work around the world
  • Free trial. No risk – test the certificate prior to payment.

News

2025-05-06

SSL/TLS Certificate Validity to Be Reduced to 47 Days by 2029

The CA/Browser Forum has announced a gradual reduction in SSL/TLS certificate validity. By March 2029, certificate validity will be gradually reduced to just 47 days.

2025-04-15

We Wish You a Happy Easter!

Due to public holidays, LeaderTelecom BV will be closed on April 18th, Good Friday, and on April 21st, Easter Monday.

All news

faq
Popular Questions
about Code Signing Certificates

How it works?

Problem. Loss of clients due to distrust of your software as your operating system notifies users about unknown soft developer.

Solution. A signature for your code by using Code Signing certificate, which identifies a software developer and guarantees code integrity.

Result. More downloads of your code and consequent increase in sales and enhanced trust from client’s side.

Try for free*

*Try before buy! Free two-weeks test period!

Prices for Certum Standard Code Signing in the Cloud


Certum Code Signing in the Cloud

Issuance in 3-7 days
with Organization Validation

Reliably and inexpensively

Degree of trust:
Organization Validation
For organizations

Verifies your organization (OV)

Signing software

The SimplySign cloud-based solution allows you to sign without the need for a physical card, reader, or USB token.

Free shipping via email

1 year
£152.68 excl. VAT
Buy
Shipping method and USB token:
2 years
£238.94 excl. VAT
Buy
Shipping method and USB token:
3 years
£312.26 excl. VAT
Buy
Shipping method and USB token:

We work without prepayment! Test 2 weeks for free!

Support

Support

We provide clients with quick, friendly and professional support via email and phone

Platform Support

Windows 8
Windows 10
Microsoft Authenticode

Microsoft Authenticode Code Sign any Microsoft format (32 and 64 bit) EXE, DLL, OCX, MSI, CAB

Java

Java Code Sign any JAR applet

Getting an SSL certificate from LeaderSSL is as easy as 1-2-3

Make a payment
(refundable)
Issue the certificate
Install it

Payment Options


CERTUM EV Code Signing


Brand Logo

Validity period: 3 years
Price per year: £104.09

Buy now!

14-day free trial. No credit card required