# Callsign

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/callsign

- Industry: Software
- Headquarters: London, UK
- Website: www.callsign.com
- Total disclosed funding: $20M
- Latest round: Series A (Jul 20, 2017)
- Investors on record: 4

## About

Callsign Inc. is a UK-based technology company specializing in fraud prevention and authentication solutions that enhance digital identity verification for businesses.Founded in 2011 in London, UK, Callsign Inc. operates as a technology firm providing advanced authentication solutions. Established by Ian Welch, the company has raised EUR 130.00 mn in funding through four deals, with the latest funding round occurring on July 26, 2021, from Abu Dhabi Investment Office. This funding will support the opening of two centres of excellence in the emirate.Callsign specializes in advanced fraud prevention, authentication, and intelligence solutions, enabling businesses to enhance digital identity verification processes. Their core product offerings include passive authentication technologies that streamline customer interactions while ensuring robust fraud detection and prevention. The unique ensembling methods utilized by Callsign allow for real-time behavioral analysis, positively identifying legitimate users and mitigating various fraud vectors such as account takeover and social engineering. The solutions cater to a diverse clientele across the finance and digital sectors, serving major retail banks and online service providers globally. Notable markets include Europe, North America, and parts of Asia, positioning Callsign as a leader in the next-generation customer experience and security domain.Callsign generated revenue of EUR 22,940,152.70 in 2023, with an EBITDA of EUR -42,020,142.40. The company operates on a subscription-based model, offering continuous access to its suite of authentication and fraud prevention services, with clients engaging through direct partnerships that integrate Callsign's technology into their existing systems.Following the EUR 130.00 mn venture funding received in July 2021, Callsign plans to utilize this capital to establish two centres of excellence in the emirate. The company aims to expand its product offerings and improve its technology infrastructure, fostering growth in targeted markets. This strategic move is expected to enhance their capabilities and customer service in the rapidly evolving landscape of digital security.

## Funding rounds

- Series A, Jul 20, 2017, $20M — Accel, AllegisCyber Capital, PTB Ventures, NightDragon Security

## Investors

- Accel (https://capitalatlas.ai/funds/accel) — Series A
- AllegisCyber Capital (https://capitalatlas.ai/funds/allegiscyber-capital) — Series A
- PTB Ventures (https://capitalatlas.ai/funds/ptb-ventures) — Series A
- NightDragon Security — Series A