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Callsign competitors & alternatives
The 12 closest competitors and alternatives to Callsign among cybersecurity companies — ranked by similarity to what Callsign actually does, not by market-cap band.
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About Callsign
Callsign is an intelligence and technology company specializing in fraud prevention and customer authentication solutions. Headquartered in London, England, the company utilizes unique ensembling methods to accurately verify user identities and prevent fraudulent activities.
Callsign at a glance
Callsign is a cybersecurity company headquartered in United Kingdom, founded in 2010. It has raised at least $35M across the 2 funding rounds on record, 1 of them with a disclosed amount. Its most recent funding round, Series A, raised $35M in July 2017. Xcout tracks 1 named person at Callsign, including Zia Hayat (CEO and founder). Xcout recorded 3 job postings from Callsign in the last 90 days.
Callsign leadership
- Zia HayatCEO and founder
Callsign funding rounds
At least $35M raised across the 2 rounds on record (1 with a disclosed amount). Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series A | $35M | 1 named | |
| Seed | Undisclosed | 2 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Hiring at Callsign
Xcout recorded 3 job postings from Callsign in the last 90 days, from a hiring record Xcout has kept since July 2026.
The weekly hiring trend, the roles and locations behind it — see Callsign's hiring signals →
Top 12 Callsign competitors
Ranked by semantic similarity — how close each company is to Callsign by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
Similar cybersecurity company
Pindrop Security, Inc. is an enterprise security company headquartered in Atlanta, Georgia, with a global operational presence. It specializes in access control, authentication, and stopping phone-based fraud through advanced technology solutions.
Cybersecurity and Digital Certification
Certisign is a Brazilian technology company that provides digital certification, electronic signature solutions, and biometric identification services.
Similar cybersecurity company
Prove provides a digital identity verification platform that helps businesses verify individuals, companies, and AI agents to reduce fraud and streamline digital onboarding. Its services include identity proofing, fraud prevention, account opening, and authentication solutions for industries such as banking, healthcare, fintech, and e-commerce.
Similar cybersecurity company
Transmit Security provides an enterprise-grade platform that combines customer identity and access management (CIAM), identity verification, and fraud prevention solutions. The company serves enterprises by offering tools for authentication, orchestration, fraud detection, and the management of both human and AI agent interactions.
Similar cybersecurity company
VU Security is a global cybersecurity company specializing in identity protection and fraud prevention. It offers solutions for verification, authentication, and fraud prevention, supporting over 350 organizations to secure their production from day one.
Similar cybersecurity company
Futurae provides a strong customer authentication, multi-factor authentication, and fraud prevention platform for businesses.
Similar cybersecurity company
IBM Trusteer provides cloud-based fraud detection, risk assessment, and identity authentication solutions for businesses.
Similar cybersecurity company
ID Dataweb, Inc. provides a platform to prevent identity fraud and power digital interactions, with its headquarters located in Centreville, Virginia.
Similar cybersecurity company
Entersekt is a global fintech provider of mobile-based authentication and app security software protecting online and mobile banking transactions and payments.
Cybersecurity & Digital Signatures
SafeSigner provides secure digital signature, transaction authentication, and 100% digital onboarding solutions protected against phishing and malware.
Cybersecurity & Fraud Prevention
OwnID provides enterprise identity fraud prevention and biometric authentication solutions to secure digital identities.
Similar cybersecurity company
authID Inc. operates a global Identity as a Service (IDaaS) platform, delivering a comprehensive suite of secure, mobile-friendly, and biometric identity solutions. This platform enables users to verify and authenticate their identity via a mobile device or a camera-equipped desktop computer. Among its core IDaaS offerings, authID Inc. provides: VERIFIED: A multi-factor authentication (MFA) system designed to offer both secure and convenient identity verification and transaction consent. PROOF: A service that establishes a trusted user identity by utilizing chip-based electronic machine-readable travel documents, national IDs, and driver's licenses, along with direct validation from national registries and other international databases. AUTHENTIFID: A solution facilitating passwordless logins and transaction authentication through FIDO2 standards, securely linked to a verified identity. IDENTITY – PORTAL: A tool that allows enterprises to enroll new customers directly through the Ipsidy portal. The company also offers specialized products like SEARCH, which is biometric matching software for desktop fingerprint capture and image processing, and CARDPLUS, providing secure plastic identity credentials and loyalty card products. Furthermore, authID Inc. extends its portfolio to include payment processing solutions. This encompasses TRANXA, a versatile, multi-application payment gateway and switch that caters to both online retailers and physical merchant locations. It also provides an automated kiosk application and its associated backend management system, which is particularly integrated with public transit ticketing systems. Founded in 2009, the company was initially known as Ipsidy Inc. before rebranding to authID Inc. Its corporate headquarters are located in Denver, Colorado.
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