Who are Callsign_'s investors?

Callsign_'s investors include Accel, AllegisCyber Capital, Nautilus Ventures Management Company (Us), Llc, Prosperity7 Ventures, PTB Ventures, QBN Capital, SC Ventures, Security Leadership Capital.

Callsign_

Founded 2011 · 279 employees on LinkedIn · 8 known investors

Find your way into Callsign_

Your email: who you already know at Callsign_, and who your contacts know
2nd- and 3rd-degree connections: people you know who worked, studied or invested with the Callsign_ team
Your LinkedIn: the connections who can make the intro for you

We rank every route by how warm it is, so you raise on warm intros instead of cold emails.

Callsign builds digital identity, authentication, and fraud-prevention technology that verifies users across web, mobile, and physical interactions using behavioral analysis and machine learning. Its solutions are aimed at businesses seeking to secure customer transactions while preserving privacy.

AI & Machine Learning Cybersecurity Fintech

Investors · 8

Accellisted by AccelPalo Alto · $1.6M – $70M

How we know: Accel's portfolio page · Not right? Tell us

AllegisCyber Capitallisted by AllegisCyber CapitalPalo Alto · $3M – $5M

How we know: the VCSheet dataset · Not right? Tell us

Nautilus Ventures Management Company (Us), Llclisted by Nautilus Ventures Management Company (Us), LlcPalo Alto

How we know: Nautilus Ventures Management Company (Us), Llc's portfolio page · Not right? Tell us

Prosperity7 Ventureslisted by Prosperity7 VenturesDhahran

PTB Ventureslisted by PTB VenturesNew York

QBN Capitallisted by QBN CapitalHong Kong

SC Ventureslisted by SC VenturesSingapore

How we know: SC Ventures's portfolio page · Not right? Tell us

Security Leadership CapitalreportedSan Jose · $100K – $5M

How we know: the VCSheet dataset · Not right? Tell us

Founder mafia

2 people who came through Callsign_ went on to found or lead other companies.

Sathvik KrishnamurthyInvestor, AdvisorFounded Voltage Security Miles KirbyInvestor and Board ObserverFounded Deeptech Labs

Related companies · 2

TeleSignTelesign provides digital identity verification, fraud protection, and programmable communications through APIs that deliver user verification, data insights, and messaging for global enterprises. Part of the Proximus Group, the company uses machine learning and phone-number data to assess identity risk and secure online experiences.

ExperianExperian offers consumers tools to access their credit report and FICO Score, build credit, and manage money, including credit card matching, bill and subscription negotiation, car insurance comparison, and a digital checking account with debit card. It serves individual U.S. consumers through its app and financial products.

Companies working in the same space as Callsign_.

Frequently asked questions

What does Callsign_ do?: Callsign builds digital identity, authentication, and fraud-prevention technology that verifies users across web, mobile, and physical interactions using behavioral analysis and machine learning. Its solutions are aimed at businesses seeking to secure customer transactions while preserving privacy.
Who are Callsign_'s investors?: Callsign_'s investors include Accel, AllegisCyber Capital, Nautilus Ventures Management Company (Us), Llc, Prosperity7 Ventures, PTB Ventures, QBN Capital, SC Ventures, Security Leadership Capital.